The outer radius of a hollow cylinder is 3 cm and inner radius is 2 cm. If the height of cylinder is 7 cm, then the volume of cylinder is :
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Find the volume of the cylinder with radius = 3 cm
Volume = πr²h
Volume = π(3)²(7) = 63π cm³
Find the volume of the cylinder with radius 2 cm:
Volume = πr²h
Volume = π(2)²(7) = 28π cm³
Find the volume of the cylinder with the hollow:
63π - 28π = 35π = 110 cm³
Answer: The volume is 110 cm³
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