Question

12. For a triangle, a = 15 cm, b= 20 cm, and s= 31 cm, then find c​

Answer 1

Answer:

84 is the correct answer

Answer 2

Answer:

c=27cm

Step-by-step explanation:

Given :

a = 15 cm, b= 20 cm, and s= 31 cm

Find c.

s=(a+b+c)/2

31=15+20+c/2

31*2=15+20+c

62=15+20+c

c= 62-15-20

c= 27cm