Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Faman39
Group Title
A bakery charges $0.10 for a cookie that is 2 inches in diameter. If the price is proportional to the area, how much do they charge for an extra large cookie that is 10 inches in diameter? Assume that each cookie is shaped of a circle.
$ 0.50
$ 1.00
$ 2.50
$ 12.50
 2 years ago
 2 years ago
Faman39 Group Title
A bakery charges $0.10 for a cookie that is 2 inches in diameter. If the price is proportional to the area, how much do they charge for an extra large cookie that is 10 inches in diameter? Assume that each cookie is shaped of a circle. $ 0.50 $ 1.00 $ 2.50 $ 12.50
 2 years ago
 2 years ago

This Question is Closed

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
@tkhunny can you able to help me with this ?
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Here's the important part: "If the price is proportional to the area" Translate that Price = k*Area or just P = k*A. After that, there MUST be some given information. "$0.10 for a cookie that is 2 inches in diameter" There it is. Now what?
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Don't do that. You just went magically from a partially set up problem statement to a solution out of the air. Show your work and think it through. We have: P = k*A. and "$0.10 for a cookie that is 2 inches in diameter" Thus: 0.10 = k*pi*(2/2)^2 = k(pi) ==> k = 1/(10pi) Now what?
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
I m kinda confuse, you are saying multiply 2 three times then divide with 10, right?
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
No. You must read this problem very carefully. You are given the DIAMETER, but the relationship is with the AREA. You must convert. Diameter/2 = Radius. pi*Radius^2 = Area. It was mean of the question writer to use '2', since there were already two '2's in the development.
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
so 2 is it right?
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
oh ok thank you @tkhunny for helping, i will try another way
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Once we ahve determiend 'k', we are nearly done. k = 1/(10pi) (1/10pi)*pi*(10/2)^2 = 25/10 = 2.50
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
It should second one?
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
i guess not
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
I don't understand the question. You just made me work the whole problem. It's 2.50.
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
I am sorry i could not get on beginning for network prob, now i went from up, where explain all, now i got. thanks so much @tkhunny !
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
So sorry for troubling :( i m really terrible
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
No name calling! Just spend the time it takes. You'll get it.
 2 years ago

Faman39 Group TitleBest ResponseYou've already chosen the best response.0
I am really sorry for everything :(
 2 years ago

tkhunny Group TitleBest ResponseYou've already chosen the best response.1
Read some material on "Direct Proportion". It's not impossible to learn it.
 2 years ago
See more questions >>>
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.