A right cylindrical shaped oil tank of height 40 m is completely filled in 20 minutes. If oil filled at a rate of 8 $π$ cubic meter per minute, then find the radius of the tank.
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Solution

Volume of the cylinder = $π r^{2} h$
Oil in the container = $8 π \times 20$
Oil in the container = volume of the cylinder
$\Rightarrow$ $8 π \times 20$ = $π r^{2} 40$
$\Rightarrow$ r = 2 m

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A right cylindrical shaped oil tank of height 40 m is completely filled in 20 minutes. If oil filled at a rate of 8π cubic meter per minute, then find the radius of the tank. ___

Volume of the cylinder = πr2h Oil in the container = 8π×20 Oil in the container = volume of the cylinder ⇒ 8π×20 = πr240 ⇒ r = 2 m

A right cylindrical shaped oil tank of height 40 m is completely filled in 20 minutes. If oil filled at a rate of 8 $π$ cubic meter per minute, then find the radius of the tank.
___

Volume of the cylinder = $π r^{2} h$
Oil in the container = $8 π \times 20$
Oil in the container = volume of the cylinder
$\Rightarrow$ $8 π \times 20$ = $π r^{2} 40$
$\Rightarrow$ r = 2 m