Question

PLEASE HELP HELP ASAP WILL AWARD BRAINIEST 20 POINTS

Answer 1

The surface area is the area of all the surfaces. Let's find the area of the square and the four triangles and add them together:

Square:

$\sf A=s^2$
$\sf A=10^2$
$\sf A=100~in^2$

Triangles 1, 2, 3, & 4:

$\sf A=\dfrac{1}{2}bh$
$\sf A=\dfrac{1}{2}(10)(12)$
$\sf A=60~in^2$

Now add them all up:

$\sf 100+60+60+60+60=\boxed{\sf 340~in^2}$

So the surface area of the square pyramid is 340 square inches.