Question

If the two sides of a triangle are 12 cm, 14 cm and the perimeter of the triangle is 36 cm, then the length of the third side is?

Answer 1

hey...

let the 3rd side be x

perimeter of triangle = 1st side + 2nd side + 3rd side

12 + 14 + x = 36
26 + x = 36
x = 36 - 26
x = 10cm

Answer 2

Answer:

Let X be the third side.

Perimeter = 36cm

Therefore 36 = X + 14 + 12

Therefore X=36-14-12 = 10 cm!