Question

Find the surface area of the net below.

Answer 1

472 in²

Explanation:

This net is made up of 3 identical rectangles and 2 identical triangles.

Area of a rectangle = width x length

Area of a triangle = 1/2 x base x height

Rectangle

• width = 8 in
• length = 19 in

Triangle

• base = 8 in
• height = 2 in

Surface Area

SA = 3(8 x 19) + 2(0.5 x 8 x 2)

⇒ SA = 456 + 16

⇒ SA = 472 in²