Question

Find the lateral surface area and total surface area of a cuboid of length 80 cm, breadth 40 cm and height 20 cm

Answer 1

Given,

Length of a cuboid =80 cm

Breadth of cuboid = 40 cm

Height of cuboid = 20 cm

So, lateral surface area of cuboid = 2(l + b)h = 2(80 + 40) × 20 = 4800 cm²

Total surface area of cuboid = 2(lb +bh + hl) = 2(80 × 40 + 40 × 20 + 20 × 80) = 11200 cm²