The area of a rectangular field is 468m^2 square and it's breadth is 19.5m. Find the cost of fencing it at Rs 30 per metre.

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Solution

Area of a rectangle= length $\times$ bredth
468= length $\times$ 19.5
length $= \frac{468}{19.5} = 24$
Perimeter= 2(l + b)= 2(24+19.5)= 2(43.5)= 87m
Cost of fencing= 30 \times perimeter of the rectangle= 30 $\times$ 87 = Rs 2610

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The area of a rectangular field is 468m^2 square and it's breadth is 19.5m. Find the cost of fencing it at Rs 30 per metre.

Area of a rectangle= length × bredth 468= length × 19.5 length=46819.5=24 Perimeter= 2(l + b)= 2(24+19.5)= 2(43.5)= 87m Cost of fencing= 30 \times perimeter of the rectangle= 30× 87 = Rs 2610

Area of a rectangle= length $\times$ bredth
468= length $\times$ 19.5
length $= \frac{468}{19.5} = 24$
Perimeter= 2(l + b)= 2(24+19.5)= 2(43.5)= 87m
Cost of fencing= 30 \times perimeter of the rectangle= 30 $\times$ 87 = Rs 2610