Question

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

Answer 1

Answer:The length of the third side is 10 cm.

Step-by-step explanation:

Length of 1st side of triangle = 12 cm

Length of 2nd side of triangle = 14 cm

Perimeter of triangle = 36 cm

Therefore, Length of third side of triangle = Perimeter of triangle - (length of 1st side + length of 2nd side)

= 36 - (12 + 14)

= 36 - 26

=10

Thus, length of third side of triangle is 10 cm.

Answer 2

Answer: 10cm

Step-by-step explanation:

Let the three sides of triangle be AB,BC,AC.

AB=12cm BC=14cm AC=?

Perimeter= sum of all sides

SO, 36= AB+BC+AC

36= 12+14+AC

36=26+AC

AC=36-26

AC= 10cm

HENCE,length of third side is 10cm.