A community for students.
Here's the question you clicked on:
 0 viewing
ErinWeeks
 2 years ago
Find the surface area of the cone to the nearest tenth.
ErinWeeks
 2 years ago
Find the surface area of the cone to the nearest tenth.

This Question is Closed

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1A. 203 cm2 B. 1341.5 cm2 C. 747.7 cm2 D. 213.5 cm2

phi
 2 years ago
Best ResponseYou've already chosen the best response.1here is the formula http://math.about.com/od/formulas/ss/surfaceareavol_2.htm

phi
 2 years ago
Best ResponseYou've already chosen the best response.1can you match your numbers to the variable names in the formula?

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1i got 441 pi but thats not right..

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1i did 1/3 pi 7^2 27 .. what did i do wrong?

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1ooops i did the volume formula thats why!

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1this time i got 238 thats still not right ...

phi
 2 years ago
Best ResponseYou've already chosen the best response.1\[ area = \pi r^2 + \pi r s\] r is 7 and s is 27 is that what you started with ?

phi
 2 years ago
Best ResponseYou've already chosen the best response.1it looks like you did not multiply by pi

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1im still getting 238 _

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1i did pi*7^2 + pi 7 * 27

phi
 2 years ago
Best ResponseYou've already chosen the best response.1238 is r^2 + r*s the formula is pi r^2 + pi*r*s or pi*(r^2 + r*s)

phi
 2 years ago
Best ResponseYou've already chosen the best response.17*7 is 49 7*27 is 189 add together you get 238 no pi

phi
 2 years ago
Best ResponseYou've already chosen the best response.1can you figure out how to do it?

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1for pi * 7^2 i got 153.86

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1for pi * 7 * 27 i got 593.46

phi
 2 years ago
Best ResponseYou've already chosen the best response.1yes, I thought you figured it out already.

phi
 2 years ago
Best ResponseYou've already chosen the best response.1btw, you should not round to only 2 decimals, because your answer is slightly off. if you used all the digits the calculator gives you you get 747.6990516 which rounds to 747.7

ErinWeeks
 2 years ago
Best ResponseYou've already chosen the best response.1okay thank you so much for your help!!!
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.