Solve for the surface area of the rectangular prism 12in 5in 3 in
To find the surface area of a rectangular prism, we need to find the area of each of its six faces and then sum them up.
The formula for the surface area of a rectangular prism is:
Surface Area = 2lw + 2lh + 2wh
Given:
l = 12 inches
w = 5 inches
h = 3 inches
Substitute the 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 is 222 square inches.