Question

If (s - a ) = 7 cm, (s - b ) = 8 cm and (s - c ) = 15 cm. Find s.​

Answer 1

Step-by-step explanation:

given s-a=7cm (1)

s-b=8cm (2)

s-c=15cm (3)

where a,b,c are sides of traingle

perimeter of triangle is a+b+c/2

(1)+(2)+(3)

3s- (a+b+c)=30cm

3s-(25)=30cm

3s=30+25

3s=55

s=18.33