The surface area of a right rectangular prism is calculated by adding the areas of all six faces.
The area of each face can be calculated as follows:
- The area of the top and bottom faces, which have dimensions w × l, is 12 in. × 18 in. = 216 in.² each.
- The area of the front and back faces, which have dimensions h × l, is 8 in. × 18 in. = 144 in.² each.
- The area of the left and right faces, which have dimensions h × w, is 8 in. × 12 in. = 96 in.² each.
Adding all these areas together:
216 in.² + 216 in.² + 144 in.² + 144 in.² + 96 in.² + 96 in.² = 912 in.²
Therefore, the surface area of the prism is 912 square inches.
Calculate the surface area of a right rectangular prism with dimensions w=12 in., l=18 in., and h=8 in.. How many square inches is the surface area?(1 point)
in.2
2 answers
Calculate the surface area of a cube with 12-inch edges. How many square inches is the surface area?(1 point)
in.2
in.2