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Question

What is the volume of the given cuboid? Area of each side of smaller cube is 1 cm2.

A
5 cm3
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B
6 cm3
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C
7 cm3
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D
8 cm3
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Solution

The correct option is D 8 cm3
Given:
Area of the side of the cube, A=1 cm2.
Cuboid is made of the given cubes.

Side of a cube is a square. Area of sqaure is given by:
A=a2
where a is the length of the side of the square.
1 cm2=a2
a=1 cm

Hence side length is 1 cm. This is also the length of the side of the cube.

Volume of a cube is given by:
V=a3
V=13 cm3=1 cm3

The given cuboid consists of 8 smaller cubes.
So, the volume is:
V=8×1 cm3=8 cm3

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