If each side of a cube is increased by 10% the volume of the cube will increase

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If each side of a cube is increased by 10% the volume of the cube will increase by

Options:

A . 10%

B . 25%

C . 33.1%

D . 30%

Answer: Option C
Answer: (c)
Single equivalent increase for 10% and 10%
= $(10 + 10 + {10 × 10}/100)$% = 21%
Again, single equivalent increase for 21% and 10%
= $(21 + 10 + {21 × 10}/100)%$
= 31 + 2.1 = 33.1%
Using Rule 14,
"If every side of cube is increased by a%, then increase % in volume"
= $(3a + {3a^2}/100 + a^3/(100)^2)$%

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