Question

if the length of two sides of a triangle are 5 cm and 12 cm and perimeter is 30 cm then find the third side​

Answer 1

Length of third side of triangle is 13 cm

Answer 2

Here the perimeter of the triangle is given to be 30 cm

Also, out of the three sides, two sides are given to be 5 cm and 12 cm

We have to find the third side

Let the third side be x

Then, perimeter = x + 5 +12

30 = x + 17

x = 30 - 17

x = 13

Hence, the third side will be 13 cm