Question

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

Answer 1

ts of cuboid =2(lb+bh+hl)
=2(20×15+15×10+10×20)
= 2(300+150+200)
= 2(650)
= 1300

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Answer 2

Answer:

The total surface area of the cuboid is 1300 cm² .

Step-by-step explanation:

Formula

Total surface area of a cuboid = 2 (Length × Breadth + Breadth × Height + Height × Length)

As given

The length,breadth and height of a cuboid are 20cm ,15cm ,10cm respectively.

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

                                                   = 2 × (300 + 150 + 200)

                                                   = 2 × 650

                                                   = 1300 cm²

Therefore the total surface area of the cuboid is 1300 cm² .