The perimeter of the parallelogram is 16 cm. what are the sides, if it is known that one of the sides is 3 p larger than the other.

Given:
P = 2 * (a + b) = 16 cm
a = 3 * b
Find: a =?, B =?
Solution: P = 2 * (a + b) = 2 * (3b + b) = 2 * 4b = 8b
So P = 8b
So 8b = 16 cm
Then b = 16cm / 8 = 2cm
a = 3 * b = 3 * 2 cm = 6 cm
Check: P = 2 * (a + b) = 2 * (6 cm + 2cm) = 2 * 8 cm = 16 cm – agreed with the condition, then the answer is correct.
Answer: The sides of the parallelogram are 6 cm and 2 cm