Question

One side of a triangle is twice as long as The second side. The remaining side is 4 cm greater than the second side. The perimeter of the triangle is 24 cm. Find the length of each side of the triangle.

a. Label each side in terms of the second side

b. Write a formula for the perimeter of the triangle in terms of the second side

c. Use the formula to find the length of each side of the triangle

Answer 1

2nd side: x

1st side: 2x

3rd side:: 2x+4

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Equation:

x + 2x + 2x+4 = 24

5x = 20

x = 4 cm (2nd side)

2x = 8 cm (1st side)

2x+4 = 12 cm (3rd side)