A triangular park ABC has sides 120m, 80m and 50m . 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.
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Cost of fencing =20×Perimeter of triangle
Perimeter of triangle= 120+80+50
=250
Cost of fencing =20×250
" =5000
Perimeter of triangle= 120+80+50
=250
Cost of fencing =20×250
" =5000
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