Find the diameter of a circle if its radius is 1.25 cm

To solve this problem, you need to find the diameter of the circle;
Consider this task and analyze it;
According to the condition of the problem, we are given a circle in which we know the radius, we need to find the diameter of this circle;
To do this, recall from the construction of a circle that the diameter of any circle consists of two radii of the same circle. For a clear explanation, we write down the formula for the dependence of the diameter of a circle on the radius of the circle;

d = 2 * r, where d is the diameter, r is the radius;

Let’s substitute the data;

d = 2 * 1.25 = 2.5cm.