Question

Find the value of c in a triangle if the semi perimeter is 13 and the values of a and b are 8 and 7 respectively.

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Answer 1

Step-by-step explanation:

Given-: semi perimeter = 13

a = 8

b = 7

Semi perimeter = a + b + c /2.

13 = 8 + 7 + c /2

13 = 15 + c /2

13 × 2 = 15 + c

26 - 15 = c

c = 11.

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Answer 2

⠀⠀ıllıllı uoᴉʇnloS ıllıllı

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Given:

Semi perimeter of triangle, S = 13

a = 8

b = 7

c = ?

We know that semi perimeter of triangle is:

S = a + b + c/2

a + b + c = 2S

8 + 7 + c = 2 x 13

c = 26 - 15

c = 11

• Therefore, the value of c is 11.

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