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3. The area of a courtyard is 3750 m. Find the cost of covering it with gravel to a height of 1 cm if the gravel costs Rs 6.40 per cubic metre. (Rs. 240)​

Sagot :

nguyenminhthu230120

1cm=0,01m

V=3750.0,01=37,5 cubic metre

=>37,5.6,4=240Rs

semsee45

Answer:

Rs. 9000

Step-by-step explanation:

convert 1 cm to metres:

1 meter = 100 cm

⇒ 1 cm = 1/100 = 0.01 m

volume = area x height

            = 3750 x 0.01

            = 37.5 m³

Given cost per cubic metre = Rs. 240:

⇒ total cost = 240 x 37.5 = 9000

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