Question

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

Answer 1

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

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The canal is cuboid

breadth = 1.5m

height = 6m

Speed of the canal = 10 km/hr

Length of canal in 60 minutes = 10 km

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

Volume of canal = lenght*breadth*height = 5000*1.5*6 = 45000m³

Volume of water in the canal = Volume of water to be irrigated

Volume of water in canal = Area of irrigation * desired height

(1m = 100 cm)

45000 = Area of irrigation * 0.008

$\frac{45000}{0.08}$ = Area of irrigation

Area irrigated = 562500m²

$\huge\underline\mathfrak{TheDarth}$

Answer 2

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