Question

Two sides of a triangle are 12cm and 14cm. The perimeter of the triangle is 40 cm. Find the length of the third side? Also find the side of the square with the same perimeter.​

Answer 1

Answer:

14cm

Step-by-step explanation:

Perimeter of a triangle  is sum of all sides of Triangle

Let length of third side be Xcm

Therefore 40cm = 12cm + 14cm + Xcm

                 X = 40 - 26

                 X = 14cm

Answer 2

Answer:

Third side of Traingle is 14 cm.

The side of the square will be 10 cm.

Step-by-step explanation:

Perimeter of Traingle = 40 cm

First Side of triangle = 12 cm

Second Side of triangle = 14 cm

Third side = X

We know that Sum of sides of triangle = Perimeter

So 40 = 12 + 14 + X

so, x = 14 cm

So, Third side is also 14 cm.

Also, the perimeter of the square is 40 cm.

We know that ,

perimeter of the square = 4 x ( side)

So, 40 = 4 x side

so, side = 10 cm

So the side of the square will be 10 cm.