Question

water in a canal, 6m wide and 1.5m deep, is flowing with a speed of 10 km/h. how much area will it irrrigate in 30 minutes, if 8 cm of standing water is needed?

Answer 1

The area will take to irrigate = 562500 m2

Answer 2

Answer:

5625000 sq.m.

Step-by-step explanation:

Width of canal = 6 m

Depth of canal = 1.5 m

Length of canal in 1 hour = 10 km

Length of canal in 60 minutes = 10 km

Length of canal in 30 minutes = $\frac{10}{60} \times 30 = 5 km = 5000 m$

Volume of canal = $Length \times Breadth \times Depth = 5000 \times 6 \times 1.5 =45000 m ^3$

Volume of Canal = Area irrigated * Height

$450000 = Area  \times \frac{8}{100}$

$\frac{450000 \times 100}{8}= Area$

$5625000 m^2= Area$

Hence It will irrigate 5625000 sq.m.