A gardener wants to fence a semi circular garden of radius 7 m. Find the perimeter of semi circular garden. Also find the cost of fencing the garden if it costs Rs4 per metre.

Radius of the semi-circular garden, r=7 mPerimeter of semi-circular garden=πr+2r=227×7+2×7=22+14=36 mCost of fencing 1 m of the garden=Rs 4Cost of fencing 36 m of the garden=4×36=Rs 144

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