Question

Hey there! Can I get some help please ? Thanks!

Answer 1

The surface area is the sum of area of all faces of the shape

For the first shape:
four areas of four triangles + area of the square base

A= 4 (0.5*16*17) + (16*16) = 800 in^2

For the second shape:
area of the lateral cone + area of the circle base
A = 3.14*3* (9+64)^0.5  + 3.14 * 9 = 108.75 in^2

Hope that helps