Question

Q19. Find the area of the card board used to make a closed box of dimensions cm x 2 cm x 3 cm.

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Answer 1

Total Surface area of a cuboid is given by T.S.A=2(lb+bh+hl) where l,b,h are dimensions of cuboid.

Given l=12 cm,b=10 cm,h=8 cm

T.S.A=2((12)(10)+(10)(8)+(8)(12))

=2(120+80+96)

2(296)=592 cm2

Area of cardboard required to prepare a closed box of given dimensions =592 cm2

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