Question

The side of a triangle are in the ratio of 3:4:5.If its perimeter is 35cm,then what is its area​

Answer 1

Answer:

By Heron's formula,

Area of the triangle = root s(s−a)(s−b)(s−c)

We know, s= 3+4+5/ 2 =6

∴ Area of triangle = under root 6( 6-3) (6-4) (6-5)

= under root 6×3×2×1

= 6cm²