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Question

Dimensions of a cuboid are 25 cm ×20 cm ×4 cm. The volume of a cube is half the volume of the cuboid. What is the total surface area of such a cube?

A
400cm2
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B
600cm2
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C
800cm2
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D
1200cm2
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Solution

The correct option is C 600cm2
Volume of the cube =12× volume of cuboid
=12×(25×20×4)cm3=1000cm3

edge of the cube =31000 cm =10 cm
Surface area of the cube = 6×( edge)2

=6×(10)2cm2
=600cm2

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