Question

The sides of the triangle are in the ratio on 3:4:5.if perimeter of triangle is 360m find its area using herons formula. also find the cost of fencing the triangle with barded wire at the rate of rupees 2per metre

Answer 1

Answer:

sides of the triangle

36ox 3/12=90m

360x4/12 = 120m

360x5/12=150m

semi perimeter=36o/2=180

Area =v180x(180-90) (180-120)

(180-150)

=v180x90x60x30-v180180=54oo

Area of the triangle =5400m2 Ans

cost of fencing=360x2=Rs 720. Ans Ans