Question

The perimeter of a square lawn is 144 cm. Find the cost of mowing the lawn at the rate of ₹ 10 per square cm.

Answer 1

Answer:

₹12960

Step-by-step explanation:

First find side of the square lawn.

Formula → s = $\frac{P}{4}$

Here the perimeter of the square lawn = 144 cm

So, s = $\frac{144}{4}$

⇒ s = 36 cm

Now find Area.

Formula → A = s²

So, A = (36 cm)²

⇒ A = 1296 cm²

Now the area is 1296 cm²

Given,

Cost of mowing the lawn per cm² = ₹10

Then cost of 1296 cm² = (1296 cm² × ₹10)

⇒ Cost of 1296 cm² = ₹12960

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