Question

a, b, c, are the sides ofa triangle and s is its semi-perimeter. If (s-a)=90 cm, (s-b)=50 cm, and (s-e)=10 cm, then find the value of s.​

Answer 1

Answer:

Step-by-step explanation:

Area of a triangle = √s(s-a)(s-b)(s-c)

A=90,b=50 and c=10

So,

S=90+50+10/2

S=150/2

S=75cm

Answer 2

Answer:

semi perimeter s = 150

Step-by-step explanation:

sides a b c triangle having

semi perimeter formula s =(a+b+c)/2

(s-a)=90 ⇒ a=s-90

(s-b)=50 ⇒ b=s-50

(s-c)=10 ⇒ c=s-10

s=(a+b+c)/2

s=((s-90)+(s-50)+(s-10))/2

2s=3s-150

3s-2s=150

s=150