Question

The square base has side lengths of 10 millimeters. The height of one triangular face is 15 millimeters. Find the total surface area of the square pyramid.(if you can answer it thanks!)

Answer 1

Answer:

The total surface area of the square pyramid is $SA=400\ mm^2$

Step-by-step explanation:

we know that

The surface area of a square pyramid is equal to the area of the square base plus the area of four triangular faces

so

$SA=10^{2} +4[\frac{1}{2}(10)(15)]$

$SA=400\ mm^2$