The length of one side of the triangle is 6 cm. The second side is 2/3 of the length of the first side, and the third is 0.75

The length of one side of the triangle is 6 cm. The second side is 2/3 of the length of the first side, and the third is 0.75 of the first. Find the perimeter of the triangle.

The task of finding the fraction of a number. In our case, both ordinary and decimal.
Find the lengths of the second and third sides:
6 * 2/3 = 6/3 * 2 = 4 (cm) – the second side;
6 * 0.75 = 4.5 (cm) – third side.
We find the perimeter of the triangle by the formula:
P = a + b + c = 6 + 4 + 4.5 = 14.5 (cm).
Answer D is suitable.
Answer: The perimeter of the triangle is 14.5 cm.