comunitive properties
If you draw a diagram of a 3D cuboid and label the sides, it may make this a little easier to understand: There are 6 surfaces in total: 2 are 8 x 5 2 are 8 x 4 2 are 4 x 5 Total surface area is (2x8x5) + (2x8x4) + (2x4x5) = 80 + 64 + 40 = 184 Answer is 184 square inches
comunitive properties
If you draw a diagram of a 3D cuboid and label the sides, it may make this a little easier to understand: There are 6 surfaces in total: 2 are 8 x 5 2 are 8 x 4 2 are 4 x 5 Total surface area is (2x8x5) + (2x8x4) + (2x4x5) = 80 + 64 + 40 = 184 Answer is 184 square inches