The cost of fencing a triangular ground having the sides 15 m , 8 m and 17 m at the rate of ₹3 per m is :

₹ 220

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₹. 120

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₹. 140

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₹. 100

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Solution

The correct option is B
₹. 120

We can calculate the perimeter by adding all the three sides

Perimeter = 17 + 15 + 8 = 40 m

$∴$ Cost of fencing at ₹ 3 per metre = 40 $\times$ 3 = ₹120

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