Question

A Triangular Park ABC has sides 120 m , 80 m and 50m. Gardner has put a fence around it and also plant grass inside the park . find the area he plants grass. find the cost of fencing with barbed wire at the rate of Rs.20 per meter, leaving 3m rude for a gate on one side.

Answer 1

Perimeter = 120 + 80 + 50
= 250
Fencing area = 250 - 3
= 247
Cost of fencing 1m = rs 20
Cost of fencing 247 m = rs 20 * 247
= Rs 4940
Area of triangle garden
= √s+ ( s- a) + ( s - b ) + ( s- c)
= √ 125 + 5 + 45 + 75
√250
= 5√10
Area in which gardener should plant grass = 5√10 m square

Answer 2

good question of Rd I had done this before