Question

The perimeter of a triangle is 117 cm. two sides are 31 cm and 48 cm. find the third side.

Answer 1

a + b + c = perimeter

a = 31

b = 48

c = ?

31 +48 + c = 117

79 + c = 117

c = 38

the third side is 38

Explanation:

Answer 2

31+48+x=117
x=117-31-48
x=38
The third side is 38cm