the volume of a
cylinder is 211.2 cm3 and its height is 4.2 cm, find the diameter of its base.
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volume of cylinder = 22÷7 r×r ×h
211.2=22÷7×r×r×4.2
r×r=16------sq.root
r=4cm
D=r×2
=4×2
=8
211.2=22÷7×r×r×4.2
r×r=16------sq.root
r=4cm
D=r×2
=4×2
=8
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