Question

If radius and height of a cylinder becomes double , how many percent its volume will be changed?


Pls give proper answer!!!


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Answer 1

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%