The perimeter of a square plot = 360 m. Find :
(i) its area.
(ii) cost of fencing its boundary at the rate of ₹40 per metre.
(iii) cost of levelling the plot at ₹60 per square metre.
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Step-by-step explanation:
Given, perimeter of square plot = 360 m
∵ Perimeter of the square = 4 × its side
∴ 4 × side of square = 360 m
⇒ side of the square = 360m/4 = 90 m
(i) The area of the square field = (side)²
= (90 m)²
= 90 m × 90 m
= 8100 m²
Cost of fencing at Rs. 40 per metre
= 8100 m2 × Rs. 40 per metre
= Rs. 324000
Cost of levelling at Rs. 60 per m²
= 8100 m² × Rs. 60 per m²
= Rs. 486000
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