Question

Using the net below, find the surface area

of the triangular prism.
4 cm
3 cm
6 cm
4 cm
6 cm
3 cm
5 cm
4 cm
Surface Area = [?] cm2

Answer 1

The surface area is all the sides areas added up

The area of the triangle is 1/2bh or 1/2(4)(3)
= 6
The area if the middle rectangle is bh or (3)(6)
= 18
The area of the other rectangle is bh or (5)(6)
= 30

6+6+18+30+30=90cm^2

Hope this helps :)