Question

the perimeter of a triangle is 64cm. two of its sides measure 15cm and 26cm. find the length of the third side of the triangle ​

Answer 1

third side =64 - (15 + 26)

= 23 cm

Answer 2

Let the third side be C

Perimeter of triangle = a+b+C

64 = 15+26+cm

So c =64-41

So c= 23 cm. Ans.