A sphere and a hemi sphere have same radius .What is the ratioof volume of hemi sphere to volume of the hemisphere
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Volume of Sphere = 4/3* pi*r^3.. 1.
Volume of hemisphere = 2/3* pi*r^3.. 2.
Divide 1. By 2..
= 4/3* pi*r^3 / 2/3* pi*r^3
= 4/2
= 2/1
= 2:1
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