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Question

The length of a cuboid is twice its breadth. The breadth is twice its height. Find the total surface area of the cuboid. Given that the height of the cuboid is 2 cm.
[2 Marks]

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Solution

Given, the height of cuboid is 2 cm.
Also, it given that the length of a cuboid is twice its breadth and the breadth is twice its height.
breadth=2×height=2×2=4 cm
length=2×breadth=2×4=8 cm
So,
Length, l=8 cm
Breadth, b=4 cm
Height, h=2 cm
[1 Mark]


Total surface area =2(lb+bh+hl)
=2(8×4+4×2+2×8)
=112 cm2
[1 Mark]


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