Question

Two side of a triangle are 12cm and 14cm. The perimeter of the triangle is 36cm. What is the third side.​

Answer 1

let the third side be x

perimeter of triangle= s+s+s

36=12+14+x

36=26+x

36-26=x

10= x

third side is 10

Answer 2

Answer:

let third side be x

perimeter of the triangle=sum of all sides

36=12+14+x

36=26+x

36-26=x

i.e. x=36-26

x=10cm