A rectangular grassy lawn measuring 38m by 25m has been surrounded externally by 2.5m wide path. Calculate the cost of gravelling the path at the rate of Rs 120 per m2

Answer:

Length of the rectangular lawn = 38 Mtrs.

Breadth of the rectangular lawn = 25 Mtrs.

Width of the path surrounding the lawn = 2.5 Mtrs.

So the length of the rectangular Lawn with the path = 38 + 2.5 + 2.5 = 43 Mtrs.

So thebreadth of the rectangular Lawn with the path = 25 + 2.5 + 2.5 = 30 Mtrs.

Area of the rectangular lawn = Length x Breadth = 38 x 25 = 950 M2.

Area of the rectangular lawn including the path = Length x Breadth = 43 x 30 = 1290 M2.

So the area of the surrounding path = 1290 - 950 = 340 M2.

Rate of the gravelling the path = Rs. 120 per M2.

Then the cost of gravelling the path = 340 x 120 = Rs 40800.

Ans: Rs. 40800.

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rs agrawal math class 7
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40800 RUPEES
 
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