Question

19. Find the perimeter of the given triangle.
3x-7
2x + 5
-X+ 11​

Answer 1

Answer:

Perimeter of a triangle= sum of all sides

=( 3x-7)+(2x+5)+(-x+11)

3x-7+2x+5-x+11

4x+9

plz follow me

Answer 2

Given :

• 1st side is 3x - 7
• 2nd side is 2x + 5
• 3rd side is -x + 11

To find :

• The perimeter

According to the question,

➮ Perimeter of triangle = Sum of all its side

➮ (3x - 7) + (2x + 5) + (-x + 11)

➮ 3x - 7 + 2x + 5 - x + 11

Collecting like terms together

➮ 3x + 2x - x - 7 + 5 + 11

➮ 5x - x - 2 + 11

➮ 4x + 9

.°. The perimeter of triangle is 4x + 9...