Question

Two same-sized triangular prisms are attached to a rectangular prism as shown below. If a = 20 cm, b = cm, c = cm, d = 4 cm, and e = 8 cm, what is the surface area of the figure?

Answer 1

Explanation:

Answer: a) 1,208 square centimeters

The surface area would be the sum of the different areas separated in the figure.

The area of the front and back faces of the rectangular prism:

The area of the top and the base of the rectangular prism:

The area of the front and back faces of both triangular prisms:

The area of the side faces of both triangular prisms:

The area of the bases of both triangular prisms:

Finally, the surface area of the whole figure: