From a tap of inner radius 0.75 cm, water flows at the rate of 7 m per

1.	From a tap of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in one hour.
Answer» We have, Inner radius of tap = 0.75 cm Length of water flowing in 1s = 7m = 700 cm Volume of water per second derived from tap = πr^‑2l = 22/7 × 0.75 × 0.75 × 700 = 1237.5 cm³ ∴ Volume of water derived in 1 hour (3600 sec) = (1237.5 × 3600)/1000 = 4455 litres

From a tap of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in one hour.

Answer»

We have,

Inner radius of tap = 0.75 cm

Length of water flowing in 1s = 7m = 700 cm

Volume of water per second derived from tap = πr^‑2l

= 22/7 × 0.75 × 0.75 × 700

= 1237.5 cm³

∴ Volume of water derived in 1 hour (3600 sec) = (1237.5 × 3600)/1000

= 4455 litres