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प्रश्न
A Rose garden is in the form of circle of radius 63 m. The gardener wants to fence it at the rate of ₹ 150 per metre. Find the cost of fencing?
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उत्तर
Radius of the garden r = 63 m
Circumference of the garden = 2πr units
= `2 xx 22/7 xx 63 "m"`
= 2 × 22 × 9
= 396 m
Cost of fencing 1 meter = ₹ 150
Cost of fencing 396 meter = ₹ 150 × 396 = ₹ 59,400
∴ Cost of fencing the garden = ₹ 59,400
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