Question

Water is flowing out of a cylindrical pipe at the rate of 10m / minute .how many litres of water will flow out of this pipe in half an hour if the diameter of the pipe is 7cm.

Answer 1

$\underline{\textbf{Question}}$

$\text{Water is flowing out of a cylindrical pipe at the rate of 10m minute .}$$\text{how many litres of water will flow out of this pipe in half}$$\text{ an hour if the diameter of the pipe is 7cm.}$

$\underline{\textbf{Solution}}$

Water Flowing Rate=10 m/minute

In Half An Hour=30 minutes

It will Travel=30×10=300 m

Now Diameter=7cm=0.07 m

Radius=0.07/2 m

Now Length=300 m

Radius=0.07/2 m

Volume of Cylinder=πr²h

$\frac{22}{7 } \times \frac{0.07 \times 0.07}{2 \times 2} \times 300 \\ \\ = \frac{22}{7} \times 0.001225 \times 300 \\ = \frac{22}{7} \times \frac{1225}{1000000} \times 300 \\ = 1.115 {m}^{3}$

1m³=1000litres

So,

1.115×1000=1115 litres

$\boxed{\textbf{1115 Litres of water}}$

Answer 2

Answer:

Step-by-step explanation:

Water Flowing Rate=10 m/minute

In Half An Hour=30 minutes

It will Travel=30×10=300 m

Now Diameter=7cm=0.07 m

Radius=0.07/2 m

Now Length=300 m

Radius=0.07/2 m

Volume of Cylinder=πr²h

1m³=1000litres

So,

1.115×1000=1115 litres