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11-10-2020
Mathematics

contestada

A triangular park ABC has sides 120m, 80m and 50m (see Fig. 12.7). A

gardener Dhania has to put a fence all around it and also plant grass inside. How

much area does she need to plant? Find the cost of fencing it with barbed wire at the

rate of Rs 20 per metre leaving a space 3m wide for a gate on one side.

pls answer ASAP

Respuesta :

musiclover10045 musiclover10045

11-10-2020

The fence would cover the perimeter of the triangle.

The perimeter is the sum of the 3 sides:

120 + 80 + 50 = 250 meters.

There will be a 3 meter space for the gate, so subtract 3:

250 - 3 = 247 meters of fence is needed.

Now multiply the amount of fences needed by the price per meter:

247 x 20 = Rs 4,490

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