Find the area of the lateral faces of the right triangular prism with altitude of 5 cm and base edges of length 3 cm, 4 cm, and 5 cm.

The area of all 3 lateral triangular faces will be found by using the formula for area of a triangle.

A = 1/2bh

Face 1:
1/2 x 3 x 5
A = 7.5 square cm

Face 2:
1/2 x 4 x 5
A = 10 square cm

Face 1:
1/2 x 5 x 5
A = 12.5 square cm

12.5 + 7.5 + 10 = 30 square cm

The area of the lateral faces is 30 square cm.

21, i'm pretty sure it's right lol