Question

Find the surface area of the prism by the net.

Show your work.

Answer 1

S.A. = 209.8 m²

Explanation:

We have:

2 rectangles 4m × 3.8m

2 rectangles 3.8m × 11.5m

and 2 rectangles 4m × 11.5m

The formula of an area of a rectangle:

A = lw

l - length

w - width

Calculate:

(4)(3.8) = 15.2 m²

(3.8)(11.5) = 43.7 m²

(4)(11.5) = 46 m²

The Surface area:

S.A. = (2)(15.2) + (2)(43.7) + (2)(46) = 30.4 + 87.4 + 92 = 209.8 m²