The surface area of a right rectangular prism can be found by finding the sum of the area of each of the faces of the prism. What is the surface area of a right rectangular prism with length 4 centimeters (cm), width 9 cm, and height 3 cm? (Area of a rectangle is equal to length times width.)
The surface area of the rectangular prism is the total area of each of the faces of the prism and can be written as
2(length × width) + 2(height × width) + 2(length × height),
2(4 cm × 9 cm) + 2(3 cm × 9 cm) + 2(4 cm × 3 cm), or 150 cm^2.