Water in a canal 1.5 m wide and 6 m deep is flowing with a speed of 10

1.	Water in a canal 1.5 m wide and 6 m deep is flowing with a speed of 10 km/hr. How much area will it irrigate in 30 minutes if 8 cm of standing water is desired?
Answer» Speed of flowing water = 10 km/hr In 30 minutes length of flowing water =10 × \(\frac{30}{60}\) km = 5 km = 5000 m Volume of flowing water in 30 minutes = 5000 × width × depth Width of canal = 1.5 m Depth of canal = 6 m Volume of canal = 5000 × 1.5 × 6 m³ = 45000 m³ Irrigated area in 30 minutes if 8 cm of flowing water is required = \(\frac{45000}{0.08}\) = 562500 m²

Water in a canal 1.5 m wide and 6 m deep is flowing with a speed of 10 km/hr. How much area will it irrigate in 30 minutes if 8 cm of standing water is desired?

Answer»

Speed of flowing water = 10 km/hr

In 30 minutes length of flowing water =10 × \(\frac{30}{60}\) km

= 5 km = 5000 m

Volume of flowing water in 30 minutes = 5000 × width × depth

Width of canal = 1.5 m

Depth of canal = 6 m

Volume of canal = 5000 × 1.5 × 6 m³

= 45000 m³

Irrigated area in 30 minutes if 8 cm of flowing water is required

= \(\frac{45000}{0.08}\)

= 562500 m²