Solve for the surface area of the rectangular prism. 12in, 5in, 3in

Answer 1

To find the surface area of a rectangular prism, you need to calculate the area of each of the six faces and then add them together.

The formula for the surface area of a rectangular prism is given by:
Surface Area = 2lw + 2lh + 2wh

Given:
Length = 12 inches
Width = 5 inches
Height = 3 inches

Substitute the given values into the formula:
Surface Area = 2(12)(5) + 2(12)(3) + 2(5)(3)
Surface Area = 2(60) + 2(36) + 2(15)
Surface Area = 120 + 72 + 30
Surface Area = 222 square inches

Therefore, the surface area of the rectangular prism with dimensions 12 inches, 5 inches, and 3 inches is 222 square inches.