Question

Find the area of a triangle whose sides measure 20 m, 13 m, and 11 m.

Answer 1

Answer:

66 m^2

Step-by-step explanation:

Semi-perimeter = (20+13+11)/2 m

                          = 22 m

Using heron's formula: Area is-

⇒ √22(22 - 20)(22 - 13)(22 - 11)

⇒ √22 * 2 * 9 * 11

⇒ √11 * 2 * 2 * 9 * 11

⇒ √11² * 2² * 3²

⇒ 11 * 2 * 3  m^2

⇒ 66 m^2

Answer 2

I am write formula of finding area of 3 sides

you will find it