A community for students. Sign up today!
Here's the question you clicked on:
 0 viewing

This Question is Closed

elisichi
 2 years ago
Best ResponseYou've already chosen the best response.0The answer for part B, the one I don't get is 3050, but I don't know how to get there.

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1355067118226:dw

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1Who told you the answer for B is 3050? That's not what I came up with.

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1Even though that's a REALLY big number, I realize I forgot to calculate the internal diameter. Hold on.

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1Okay. I think I've got the answer. Can you tell me how you started this problem?

elisichi
 2 years ago
Best ResponseYou've already chosen the best response.0The textbook says that..

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1Textbook's wrong. Over THREE THOUSAND washers can be carved from one square meter of metal?

elisichi
 2 years ago
Best ResponseYou've already chosen the best response.0Yes, so I did 3/0.0004= 7500 and thats the number of washers for question a

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1How did you get .0004?

elisichi
 2 years ago
Best ResponseYou've already chosen the best response.0Oh my gosh, never mind I get it!!

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1You know the formula for the area of a circle is (3.14 * r^2) ? That's why I have no idea where you got the .0004

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1Here's what I did: I figured out the diameter of the entire washer. The washer's EXTERNAL DIAMETER is 2 cm. That means that the radius is 1 cm. And that means that the area is 3.14 cm squared, which is the same as .0314 meters squared.

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1I found the AREA of the entire washer, sorry. That's .0314 meters squared.

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1But the washer has a hole. So now we have to find the area of the hole. The DIAMETER of the hole (INTERNAL diameter) is 1 cm. That means that the AREA of the hole is.... (3.14 * .5 squared), which is .785 cm squared.

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1If you subtract that from 3.14 cm squared, you get 2.36 cm squared, which is the same as .0236 meters squared.

InYourHead
 2 years ago
Best ResponseYou've already chosen the best response.1Can you tell me how you got .0004?
Ask your own question
Ask a QuestionFind 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.