The largest possible sphere is carved out of a wooden solid cube of side 7cm.. Find the volume of wood left.
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Cube- a=7cm
Sphere- d=7cm ∴r= 7/2= 3.5
Required volume = volume of cuboid - volume of sphere
= a³ - 4/3πr³
= 7³ - 4/3 × 22/7 × (7/2)³
= 343- 4/3 × 11 × 49/4
= 343 - 2156/12
= 4116/12 - 2156/12
= 1960/12
= 163.3333333333333cm²
Sphere- d=7cm ∴r= 7/2= 3.5
Required volume = volume of cuboid - volume of sphere
= a³ - 4/3πr³
= 7³ - 4/3 × 22/7 × (7/2)³
= 343- 4/3 × 11 × 49/4
= 343 - 2156/12
= 4116/12 - 2156/12
= 1960/12
= 163.3333333333333cm²
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