The perimeter of a circle and its diameter vary _______ with each other.
Relation between the perimeter and the diameter of the circle.
The perimeter or circumference of the circle is given by a formula,
Where is the diameter and is the radius of the circle.
From the above relation, it is observed that the perimeter and diameter of the circle are directly related.
Hence, the perimeter of a circle and its diameter vary directly with each other.