A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
A building cast a shadow of 12 feet. At the same time a 3 feet yard stick held vertically cast a shadow of 4.5 inches. How tall is the building?
anonymous
 5 years ago
A building cast a shadow of 12 feet. At the same time a 3 feet yard stick held vertically cast a shadow of 4.5 inches. How tall is the building?

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Use ratios... height of object/length of shadow = height of other object/other length of it's shadow

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok, but I do not understand

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Since you don't know height of building, let that be x.... so for building, ratio is x/12 for the other it would 3/4.5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0set those equal to each other and cross multiply

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0you've got your ratios set up?

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0ok so now cross multiply:

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then finish solving for x

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0hey you know anything bout radiation in Japan?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Can you help me with 1 more?

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0its for my hw i need to know about the rafdiation stuff

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A map uses a scale of 1 centimeter for each 5 kilometer

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I can tell you what I have seen

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0If the distance on a map from City A to city B is 17.5 cm

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what is the distance between the cities in kilometers

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0well i dont know about miles

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0but i can help you with the other thing

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0There are 2.54 cm in 1 inch and 5280 ft in 1 mile

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0so you know that for eveery centimeter it is equal to 5 kilometers

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What do you need to know about the radiation?

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0w8 lemme help you with your stuff then you tell me radiation blah blah

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Use ratios again.... cm/km = cm/km or 1/5 = 17.5 cm/x

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0yup exactly what he/she said

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no, just leave it as 1/5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0How can it be cross multiplied?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Now to convert 87.5 km to miles?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Convert km to cm, then cm to inches, inches to feet, and feet to miles

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I am not good with geometry

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there are 1000 meters in one km, so first multiply by 1000

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Will that = the miles

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0this means 87.5 km = 87,500 m..... then, there are 100 cm in a meter, so mulitply the above answer by 100 and you'll have the answer in centimeters

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0we would g through all the steps to get to the miles, correct?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes, from cm, you would convert to get inches, then with inches you can get feet, and then feet to miles

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You have to be careful though. There are 2.54 cm in 1 inch, so this time you DIVIDE by 2.54

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.036 inches in 1 ft, so DIVIDE by 36

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You would divide 8,750,000 by 36?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no, divide by 2.54 first

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then that answer by 36

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0then last step, 5280 ft in a mile

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yes, but don't round the answer until you have divided by 5280

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and round answer to however many decimal places you need

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Hmmmm, that doesn't sound right....let me double check my work :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0NO, that IS right...I was thinking about something else...Sorry :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Haha, I'm confusing myself....let me check that

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I messed you up....so, sorry....there are 12 inches in a foot....OOPS

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0we used 36.....sorry about that

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The radiation in Japan has traveled to some parts of the U.S, through the water. The amount that is in seafood, they say is small, but a lot of places has stopped selling things like fish.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok, how far do I go back?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0we worked it right, just used the wrong number there....i apologize. Go back to where we divided by 36....that should have been 12

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I am trying to scroll up

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0we're gonna make the world record for most replies on open study

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.087.5 * 1000 * 100 ....then take that answer and divide by 2.54, then divide by 12, then divide by 5280

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok, doing that now, did you see my response abt the radiation?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yes, that is correct....AND that answer makes sense LOL Sorry about the other. It's right now :)

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0oh i didnt notice that thank you!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You're welcome...I'll let y'all chat about Japan now :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0A lot of people has been diagnosed with radiation, and some are bad

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0hey you know where you got that info like what was the news channel?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It was my local news.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I bet you can get more information online

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0maybe type in radiation in Japan

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0yea im on this BBC News website but i want to use the information you said but i have to name the source of information

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I know it is ABCnews.com

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I am checking to make sure it is correct

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I am here seeing if I can post the link

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Radiation found in Japan's food, water  Washington Times Mar 20, 2011 ... Fears of nuclear fallout grew during a wet Sunday after officials reported traces of radioactive elements in milk, spinach, water and rain ... http://www.washingtontimes.com/news/2011/mar/20/radiationfoundinjapansfoodwater/

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Wait that one is not local

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that was nt about it being in the U.S. was it?

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0um no it's about radiation in thje food and water

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Darn, my page all scrambled, i am tying to clear it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Japan Radiation: U.S. Seafood Test Fish at Los Angeles wholesaler tested for possible radiation leaked from Japan. Apr 07, 2011 07:42 AM Video from GMA ABC News

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thanks for your help today and it was nice to meet you

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0it says become a fan next to my name

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Where, I do not see it

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0Where it says NY,NY it says star (11 fans next to that it says become a fan

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It does not say that on my screen

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I see everything except become a fan

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0but it should there is a thumbs up picture and nexto it it says Become a fan

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The thumbs up is not there

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thats ok, if I attache a file can you see it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0It has my homework on it and it is geometry, I am about to fail it and ned help

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0um w8 im sorry im doing homework

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I am about to get back to my work as well. thanks for all your help

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0ltkrlkmh;kjdhjej kheeetj kjer;k;byet

radar
 5 years ago
Best ResponseYou've already chosen the best response.0Did you consider inches vs feet for the original building? An 8 ft high building sounds kind of short!

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0uh radar, you do understand this question is from 6 DAYS AGO?????????

radar
 5 years ago
Best ResponseYou've already chosen the best response.0NY,NY, I like to look at the problems and the answers for my own edification, I learn a lot that way. In the problem, the original problem, you were given that a building of unknown height cast a shadow of 12 ft. At the same a yard stick cast as shadow of 4.5 inches. The solution that you and your help worked out was the building was 8 ft tall. Kinda short don't you think. It was agreed that this was a ratio problem and one of the proportion was x/12 which I find agreeable. The other proportion 3/4.5 Huh??? That was the flaw . The units are ft vs in, while it should be 36/4.5 as the 4.5 is in inches. x/12::36/4.5 Gives a height of 96 ft. Do you agree?

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0hmmm ya i didnt notice 8 ft didnt sound right maybe you are correct? well any way its a good thing cdunn didnt fan me cuz i could have been wrong!

NY,NY
 5 years ago
Best ResponseYou've already chosen the best response.0but if it is feet to inches then isnt it 3 ft: 4.5 in? where does 36 come from?

radar
 5 years ago
Best ResponseYou've already chosen the best response.0The 3 ft yardstick cast a shadow of 4.5 inches.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Radar, you are correct. I completely overlooked that when I was working that problem.

radar
 5 years ago
Best ResponseYou've already chosen the best response.0Math93, I just fanned you, you're a good sport, I realize this was a old problem, but old enough that we couldn't learn from it.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.