Question

If each side of a cube is increased by 50%, what is the percentage increase in its volme ?

Answer 1

Let the edge of the cube be a

Volume of cube with edge 'a' = a^3 cu units

Given edge of cube is increased by 50%

Hence length of new edge of the cube
= a + a/2 = 3a/2

Volume of new cube 
(3a/2)^3 = 27a^3/8 cu units

Increase in volume
 27a^3/8 - a^3 = 19a^3/8 cu units

% increase in volume 237.5% ans
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Answer 2

the % increase in volume is 237.5 %...