Question

What’s the surface area of a regular pyramid if the base is 7 and the height is 10

Answer 1

Explanation:

the base is a square, and then there are four triangles that meet at their tip.

so you need to find the area of the base, and the four triangles.

base-l*w=7*7=49

triangles=1/2*b*h*4=1/2*7*10*4=35*4=140

140+49=189