Question

Two sides of a triangle are 12 cm and 14 cm. The perimeter of the triangle is 36cm. What is it's third side? ​

Answer 1

Answer:

10cm

Step-by-step explanation:

we will have to do 36- 12+14 = 10

Answer 2

• As per the data given in the question, we have to find the value of the expression.

              Given data:- Two sides of the triangle is $12\ cm$ and $14\ cm.$

                                    The perimeter of the triangle is $36\ cm.$

              To find:- Third side of the triangle.

              Solution:-

• We know that the perimeter of the triangle is

                  $p=a+b+c.$

• A triangle has three sides, three vertices, and three angles.
• The sum of the three interior angles of a triangle is always $180$°.
• The sum of the length of two sides of a triangle is always greater than the length of the third side.

          Therefore,

              $p=a+b+c\\36=12+14+c\\c=36-12-14\\c=10\ cm.$

       Hence we will get the third side of a triangle is $10\ cm.$