Question

Can someone help me?

for anyone who cant see it:

Find the surface area of the pyramid. The side lengths of the base are equal.
__________
If you cant see the numbers
* Bottom number is 13m and the one with an arrow is 18 m

Again sorry if you cant see it ​

Answer 1

Answer: 637 m²

Explanation:

We need to find the area of four triangles and one square.

The square: 169 m²

A = L²

A = (13 m)²

A = 169 m²

The triangles: 468 m²

-> We have four congruent triangles. I will find the area of two (skipping the "divide by two" part of the formula) and multiply by two to find all four at once.

A = B * H

A = (13 m) * (18 m)

A = 234 m²

-

234 m² * 2 = 468 m²

Total surface area:

169 m² + 468 m² = 637 m²