Question

a cuboid has an area of 20 cm and perimeter of 20cm height=6 cm find surface area

Answer 1

surface area of cuboid =2 (lb+lh+bh)
= 2×20
= 40 cm^2

Answer 2

Answer:

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2(lb+bh+hl)

$=> \:$ 2(20)

$=> \:$ 40.

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