Question

find the value of C if in a triangle
S = 13, a = 8 and b = 7​

Answer 1

Answer:

c = 11

Step-by-step explanation:

S = a + b + c / 2

=> 13 = 8 + 7 + c / 2

=> 13 = 15 + c / 2

=> 13 × 2 = 15 + c

=> 26 = 15 + c

=> 26 - 15 = c

=> 11 = c

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Answer 2

Answer:

S= a+b+c/2

13=8+7+c/2

13=15+c/2

13×2= 15+c

26=15+c

11= c