The diameter of the sphere is decreased by 25% find its new volume
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Let the diameter be x
decreased diameter x/4
new diameter x-x/4
ie. 3x/4
New radius (3x/4)/2 = 3x/8
Old radius x/2
new volume 4/3πr³
=4/3 × 22/7 × (3x/8)² × (3x/8)²
=297x²/3584
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