- Water in a canal, 6 m wide and 1.5 m deep, is
flowing at a speed of 4 km/h. How much area
will it irrigate in 10 minutes if 8 cm of standing
water is needed for irrigation? (CBSE 2014)
AC
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Step-by-step explanation:
so, the answer is 5000m
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Answer:
56.25 hectares
Step-by-step explanation: canal is a shape of cuboid
where
breadth=6m
height=1.5m
speed of canal =4km/h
length of canal in 60min =10km
length of canal in 1 min =1/60 * 10 km
length of canal in 30 min =30/60 *10 =5 km =5000m
volume of canal = L * B * H
=5000 * 6 * 1.5
v. of water in canal = volume of area irrigated
V of water in canal = v. of area irrigated * height
5000 * 6 * 1.5 = area irrigated 8 / 100
area irrigated = 5000 *6 * 1.5 *100 /8
=562500 m^2
562500/10000 hectares
=56.25 hectares
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