Question

solve the questions related to herons formula answer = 6 or 21
I m confused

Answer 1

Answer:

21 is the write answer

Step-by-step explanation:

semipereter is 1/2 of perimeter so you need to do that 18*2=7+8

32=15

32-15=21

answer

Answer 2

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Given, a=7 , b=8 , s=18

We know that,

Semi-perimeter,s= (a+b+c)/2

18=(7+8+c)/2

36=15+c

c=21

This is the best possible answer

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