Question

How to find the surface area of a cuboid

Answer 1

202 cm²

Explanation:

The opposite faces of a cuboid are congruent , then

SA = top/bottom + front/ back + sides , that is

SA = 2(9 × 4) + 2(9 × 5) + 2(4 × 5)

= 2(36) + 2(45) + 2(20)

= 72 + 90 + 40

= 202 cm²

Answer 2

To find the surface area of a cuboid we can also label the length, width and the height of the prism and use the formula SA=2LW+2LH+2HW to find the area of a cuboid