Question
Water is being pumped out through a circular pipe whose external diameter is 7 cm. If the flow of water is 72 cm per second how many litres of water are being pumped out in one hour.
✓
Answer
Volume of water that will be pumped out in 1 second
$=\pi\left(\frac{7}{2}\right)^2(72)$ cu cm
∴ Volume of water that will be pumped out in one hour
$=\pi\left(\frac{7}{2}\right)^2(72)(3600)$ cu cm
= 99,79,200 cu cm
= 9979.2 litres.
$=\pi\left(\frac{7}{2}\right)^2(72)$ cu cm
∴ Volume of water that will be pumped out in one hour
$=\pi\left(\frac{7}{2}\right)^2(72)(3600)$ cu cm
= 99,79,200 cu cm
= 9979.2 litres.
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