Question

Find the missing elements as required in each of the following with the help of Hero's formula a= 5m, b= 7m, s=9m, c = ------:

Answer 1

Answer:

s = a+b+c/2

9 = 5+7+c/2

18 = 12+c

c = 18-12 = 6

Answer 2

Answer:

s = a+b+c/2

9 = 5+7+c/2

9×2 = 12+c

c = 18-12

c = 6