Find Surface Area Given A Net Of A Triangular Prism Worksheet

For example: What is the surface area of the triangular prism?

Solution:

The above net has 2 triangles and 3 rectangles.

Area of first triangle = ½*b*h = ½*16*15 = 120 ft^2

Area of second triangle = Area of first triangle = 120 ft^2

Area of left rectangle = l*w = 17*14 = 238 ft^2

Area of middle rectangle = l*w = 16*14 = 224 ft^2

Area of right rectangle = l*w = 17*14 = 238 ft^2

Surface area of the triangular prism = Composite area of 2 triangle and 3 rectangles

                                                         = 120 + 120 + 238 + 224 + 238

                                                         = 940

Therefore, the surface area of the triangular prism is 940 ft^2.