Question

find the area of triangle,two sides of which are 60 m and 80 m and perimeter is 260 m

Answer 1

A=s (s-a)(s-b)(s-c)

s=a+b+c/2

so applying data
answer is 2133.0729m^2

Answer 2

heya folk !!!

third side if triangle =perimeter of triangle -two side of triangle.

third side =260-140

=)120.

now area of triangle by applying herons formula.
s=1/2(a+b+c)
s=130

√s(s-a)(s-b)(s-c)

=)√130(130-60)(130-80)(130-120)

=)√(2*5*13)(2*5*5)(2*5)

=)5*5*2*√13*2*

=)50√26 Ans

hope it help you

@rajukumar☺