Question

attached question, answerer(s) get medals!

Answer 1

336pi.

Answer 2

use Pythagorean thm. and get 17 for the length of the side, multiply by the circumfrence then add the area of the circle

Answer 3

well, the area of the bottom of the cone is easy to get, its:
\[Area = \pi r^{3} = \pi (8)^{2} = 64\pi\]
But now we have to get the lateral surface area which needs the slant height. Gotta use pythagorean theorem to get the slant height.\[l^{2} = 15^{2}+8^{2} \Rightarrow l^{2} = 289 \Rightarrow l = 17\]
Now we use the formula lateral surface area is:
\[\pi rl = \pi (8)(17) = 136 \pi \]
Now we just add them up:
\[136\pi + 64\pi = 200\pi\]

Answer 4

SA = pi*r^2 + pi*r*slant_height
SA = 64pi + 8*17pi
SA = 64pi + 136pi
SA = 200pi