what is the surface area of the right cone below?
http://media.apexlearning.com/Images/200701/04/6ae07650-f560-43cd-9d56-c3c55b3a9b39.gif ( Height is 15 )
not 14
The surface area of a cone is SA = π*R^2 + π*R*L I can not see the picture...
refresh the URL, you will see the pic
Better.
So using the formula π*R^2 + π*R*L we get π*64 + π*8*14
Which is 552.9 or 176 π
i don't see non of those answers in my answer choice.
What answers are in your choice?
A. 184pi Units2 B. 304pi Units2 C. 248pi Units2 D. 496pi Units2
If we find the missing foot we can use the formula SA = 1/3 * pi * R^2 * H H being the vertical leg of the triangle
So using the pathogen theorem we get 14^2-8^2 = b^2 b = sqrt (196-64) b = 11.4891
Plugging that back into the 2nd formula we get 1/3 * pi * 8^2 * 11.4891 which comes out to around 245 pi It is probably C, Sorry I didn't get the exact answer.
Sorry I don't know exactly.
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