Question

One side of a triangle is 5 m longer than the second side the third side is four times the length of the second side if the perimeter of the triangle is 65 m how long is the second side

Answer 1

10 m

Explanation:

Data:

Second side : x

Third side : four times the second side : 4*x

The other side : 5 m longer than the second side : 5 + x

Perimeter of the triangle : 65 m

Formula:

Perimeter of a triangle = one side + second side + third side

Solution:

65 = 5 + x + x + 4 * x

65 = 5 + 6 * x

65 - 5 = 5 + 6 * x - 5

60 = 6 * x

60 / 6 = 6 * x / 6

10 = x