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Question

Calculate the volume of the below figure, when cubes inside is of 1 cu unit volume.

A
84 cu units
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B
45 cu units
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C
27 cu units
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D
36 cu units
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Solution

The correct option is A 84 cu units

There are 7 cubes along the length and 3 cubes along the width of the base layer.

Area of the base layer = 7 × 3


∴ Volume of base layer = 7 × 3 × 1 = 21 cu units



Height = 4 units
Volume = Area of the base × Height
= 21 × 4 cu units
= 84 cu units

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