Question

28. Two sides of a A is a 20cm, 30cm & its area 180cm 2.Find 3rd side?​

Answer 1

Answer: solve urself

Step-by-step explanation:

let the 3rd side be x.

using heron's formula,

S=(a+b+c)/2 = (20+30+x)/2=(50+x)/2

A=$\sqrt{S(S-a)(S-b)(S-c)\\}$

180=$\sqrt{(50+x)/2*((50+x)/2-20)((50+x)/2-30)((50+x)/2-x)}$