Question

Using the net below, find the surface area of the pyramid. (in the image) 2in 3in 3in​

Answer 1

Surface area = 21 in.²

Explanation:

Surface area of the pyramid = sum of all areas of the faces or parts of the net = 4(area of triangle) + area of square base

✔️Area of the four triangles:

A = 4(½*b*h)

Where,

b = 3 in.

h = 2 in.

A = 4(½*3*2)

A = 2*3*2

A = 12 in.²

✔️Area of the square base = s²

s = 3 in.

Area = 3² = 9 in.²

✅Surface area of the pyramid = 12 + 9 = 21 in.²