Question

2
14. A lock in a canal is 40 m long, 7 m wide. When the
sluices are opened, the depth of water in the lock
decreases from 5 m to 3 m 80 cm. How many cubic
metre of water runs out?
​

Answer 1

Step-by-step explanation:

Length of lock,l=40m

Breadth of lock,b=7m

Height of water in lock,h=5m

So, Volume=lbh=40×7×5=1400m3

Volume of lock when level of water decrease from 5m to 3m 80cm(=3.8m)=40×7×3.8=1064m3

So, water runs out from lock=(1400−1064)m3=336m3