Question

126. A river 3 m deep and 60 m wide is flowing at the rate of 2.4
km/hr. What is the amount of water per minute going into the
sea?​

Answer 1

Answer:

4000000 litres

Step-by-step explanation:

river 3m deep and 40m wide is flowing at the rate of 2km/hr. How much water will fall into the sea in per minute. Pls help me fast.....

Ask for details Follow Report by Puja111 15.01.201

The river is flowing in the shape of cuboid

h =3 m

l = 2 km = 2000 m (1 km = 1000 m. 2 k m = 2×1000= 2000 m )

b = 40 m

Amount of water which will fall into the sea = Volume = l×b×h = 2000× 40× 3 = 240000 m³

This is the volume covered in hours.So we need to convert it into seconds by dividing it by 60

i.e 240000÷ 60 = 4000 m³

∴ volume = 4000 m ³

To find the amount of water in litres , we have to multiply by 1000 ( ∵ 1 m³ = 1000 l)

i.e Amount of water which will fall into the sea = 4000×1000

= 4000000 litres

Answer 2

Answer:

7200m^3

Step-by-step explanation:

2.4km=2.4×1000m=2400m

Water flow in 1 hour=3×60=2400

Water flow in 1 min=3×60×2400/60=7200m^3 (ANS)