Question

The length of each side of an equilateral triangle is increased by 5cm. The perimeter of the new triangle is 72cm. What was the side length of the original triangle?

Answer 1

Answer:

24 is the answer I think please mark as brainliist

Step-by-step explanation:

72÷3=24

Answer 2

Answer:

Step-by-step explanation:

Given : Perimeter of bigger triangle = 72cm,

To find : Length of each side of original equilateral triangle.

Solution : Let each original side of triangle be = x cm.

               So, the perimeter of triangle = x+x+x cm = 3x cm.

             Let each new side of triangle be = x+5 cm

               Similarly, perimeter of new triangle = ( x+5) +(x+5) +(x+5).

                                                 = 3x+15 = 72

              Therefore, 3x = 72-15 = 57cm.

          So, the perimeter of original triangle is 57cm.

          Now, the length of each side = 57/3 cm  = 19 cm.

I hope it helps.

Please mark as the brainliest answer.