2000π/3
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Use this formula when the radius is known: V = 4/3(PI*r3)
A hemisphere with a radius of 3 has a volume of 56.55 units3
A sphere with a volume of 50 units3 has a radius of 2.29 units. A sphere with twice the radius (4.58 units) has a volume of 402 units3.
The volume of a circular cylinder varies directly with the height of the cylinder and with the square of the cylinder's radius If the height is halved and the radius is doubled then the volume will be increased.
The new volume is 76.566 cubic inches.