Question

A Triangular Park has sides 30 m, 82 m and 56 m. A garden has to put a fence all around it

and also plant glass inside it. How much area does he need to plant? find the cost of

fencing it with the barbed wire at the rate of ₹22 per metre leaving a space of 6 metre

wide for a gate on one side.​
plz tell the write answer

Answer 1

Length of fence=perimeter of Triangle-3m

=50+80+120-3

=247m

Cost of wire=length *cost

=247*20

=4940Rs

Herons formula

area=s(s−a)(s−b)(s−c)−−−−−−−−−−−−−−−−−√

=125(125−120)(125−80)(125−50)−−−−−−−−−−−−−−−−−−−−−−−−−−−−−√

=37515−−√m2