Question

What is the surface area of a cone with a 6 in. diameter and a length (slant height) of 8 in.?

Answer 1

SA = πr² + πrs where r represents radius and s represent slant height.
= π(3)² + π(3)(8)
= 9π + 24π
= (9+24)π
= 33π

Answer 2

which one?

A)
11.6 in.2


B)
75.4 in.2


C)
104 in.2


D)
179 in.2

Answer 3

You can just make an approximate guess, we know that π is close to 3 so 33·3 = 99, which is close to 104 so C.

Answer 4

thanks a lot :3