Question

The length, breadth and height of a cuboid are 20 cm, 15 cm, 10 cm respectively. Find its total surface area.

Answer 1

total surface area of a cuboid=2(lb+bh+lh)

=2(20×15 +15×10 +20×10)

=2(300+150+200)

=2(650)

1300sq.cm

Answer 2

Answer:

1300 centimetres²

Step-by-step explanation:

Length of the cuboid = 20 centimetres

Breadth of the cuboid = 15 centimetres

Height of the cuboid = 10 centimetres

Total surface area of a cuboid = 2(lb+bh+hl)

Total surface area of the cuboid = 2( 20×15 + 15×10 + 10×20)

Total surface area of the cuboid = 2(300+150+200)

Total surface area of the cuboid = 2(650)

Total surface area of the cuboid = 1300 centimetres²

Hence the total surface area of the cuboid is 1300 cm²