If radius and height of a cylinder becomes double , how many percent its volume will be changed?
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Step-by-step explanation:
Let radius be r and height be h units.
Volume = pie r²h
Now, radius = 2r ; height = 2h
New volume = pie × (2r)² × 2h
= pie × 4r² × 2h
= 8pie r²h
Difference = 8pie r²h - pier²h
= 7pie r²h
Percentage = 7pie r²h/pie r²h × 100
= 700%
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