Volume=34βΟr3
Since volume is 36π ππ3
Then, 36Ο=34βΟr3
r3=27
r=3cm
Since, V=34βΟr3 and dtdvβ= 2cm3 per mins
dtdvβ=4Οr2dtdrβ
2=4Ο(32)dtdrβ
dtdrβ=18Ο1βcm/mins
Area(A)=Οr2
Circumference(C)=2Οr
r=2ΟCβ
β΄A=Ο(2ΟCβ)2
A=4ΟC2β
dCdAβ=2ΟCβunits
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