if the radius of a cone is decreased by 10 % then find it's effect on the volume
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if the radius of a cone is decreased by 10 % then find it's effect on the volume
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Answer:
Let initial radius and height of cone be r and h respectively.
Then the final raidus and height will become r−0.5r and h+0.2h.
Let the change in volume be X
Change in volume× Volume of Cone without change=Volume of Cone after change
X×
3
1
×π×r
2
×h=
3
1
×π×(0.5r)
2
×1.2h
X=0.3