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The area of a circular playground is 22176 $$cm^{2}$$. What is the cost of fencing this ground at the rate of ₹50 per metre?
Let the radius of the circular playground be x. The area of a circular playground is 22176 $$cm^{2}$$.
$$\dfrac{22}{7}\times r^2=22176$$
$$r=84$$ cm
$$r=0.84m$$
Cost of fencing = Rs 50 per meter
Total cost of fencing = Circumference of playground * Cost of fencing
Total cost of fencing $$=2\times\dfrac{22}{7}\times0.84\times50$$
Total cost of fencing $$=264$$ Rs
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