Question

13. The rainfall recorded on a certain day was 5 cm. Find the volume of water that fell on a
2-hectare field
14. A river 2 m deep and 45 m wide is flowing at the rate of 3 km/h. Find the quantity of water
that runs into the sea per minute.
15. A pit 5 m long and 3.5 m wide is dug to a certain depth. If the volume of earth taken out of it
is 14 m what is the depth of the pit?
16. A rectangular water tank is 90 cm wide and 40 cm deep. If it can contain 576 litres of water,
what is its length?

do it please ...take your time​

Answer 1

Answer:

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13. 1 hectare = 10000m²

2 hectare = 20000m²

20000m² = 200000000cm²

volume = 200000000*5

10,00,00,00,000cm³ = 10000m³

Ans 10000m³ of water or 10000000liters

14. volume = l*b*h

3000*2*45

6000*45

270000m³ of water or

270000000 liters of runs into sea per hour or 4500000 liters per minute

Answer 2

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$Volume=Area \: \: of \: \: CS ×Height$

$=1hectare ×5 cm$

$=10,000 m2×0.05m$

$=500 m3$