Find the cost of planting grass in a circular lawn of radius 21 m at the rate of₹15persqm.Also find the cost oc fencing the lawn at the rate of ₹5per m.
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The area of a circle = πr^2.
= 22/7 × 21 × 21
= 22 × 21 × 3
= 462 × 3
= 1386 m^2
Then, the cost for planting grass at the rate of ₹15 per m^2 =
1386× 15 = ₹20790.
And the cost of fencing will be =
1386 × 5 = ₹6930.
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= 22/7 × 21 × 21
= 22 × 21 × 3
= 462 × 3
= 1386 m^2
Then, the cost for planting grass at the rate of ₹15 per m^2 =
1386× 15 = ₹20790.
And the cost of fencing will be =
1386 × 5 = ₹6930.
Please mark as brainliest if it helps you.....
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