Question

Find the third side of the triangle if the perimeter of a
triangle is 20 m and two of its sides are 5 m and 4 m, is​

Answer 1

Answer:

11m

Explanation:

20m= 5m+4m+x

20m= 9m+x

20m-9m= x

11m=x

11m is the answer.

Answer 2

ANSWER:-

Given:

The perimeter of a triangle is 20m and have also their two sides are 5m & 4m.

To find:

The third side of the triangle.

Explanation:

Let the third side be R m

We know that perimeter of triangle: side+side+side

A/Q

→ 20m= 5m +4m+ R

→ 20m= 9m+ R

→ R= 20m-9m

→ R= 11m.

Thus,

∴The third side of triangle is 11m.