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CBSE Class 9 Answered

A triangular park has sides 120 m, 80 m, 50 m. A gardener has to put a fence all around it and also plant grass inside. How much area does he need to plant? Find the cost of fencing it with barbed wire at the rate of Rs 20 per meter leaving a space 3 m wide for a gate on one side.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

Here,

Therefore, area of park

Perimeter of park = 50 + 80 + 120 = 250 m

Thus, length of wire needed = 250 - 3 = 247 m

So, cost of fencing = Rs 20 247 = Rs 4940

Answered by | 04 Jun, 2014, 03:23: PM
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