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ErinWeeks
Group Title
Find the surface area of the cone to the nearest tenth.
 one year ago
 one year ago
ErinWeeks Group Title
Find the surface area of the cone to the nearest tenth.
 one year ago
 one year ago

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ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
A. 203 cm2 B. 1341.5 cm2 C. 747.7 cm2 D. 213.5 cm2
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
here is the formula http://math.about.com/od/formulas/ss/surfaceareavol_2.htm
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
can you match your numbers to the variable names in the formula?
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
i got 441 pi but thats not right..
 one year ago

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

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
ooops i did the volume formula thats why!
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
this time i got 238 thats still not right ...
 one year ago

phi Group TitleBest 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 ?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
it looks like you did not multiply by pi
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
im still getting 238 _
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
i did pi*7^2 + pi 7 * 27
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
238 is r^2 + r*s the formula is pi r^2 + pi*r*s or pi*(r^2 + r*s)
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
7*7 is 49 7*27 is 189 add together you get 238 no pi
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
can you figure out how to do it?
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
okay i get that
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
for pi * 7^2 i got 153.86
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
for pi * 7 * 27 i got 593.46
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
so would it be C ???
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
yes, I thought you figured it out already.
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
okay so it is C?
 one year ago

phi Group TitleBest ResponseYou've already chosen the best response.1
btw, 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
 one year ago

ErinWeeks Group TitleBest ResponseYou've already chosen the best response.1
okay thank you so much for your help!!!
 one year ago
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