Find the radius of the circle if its length is 20.41 dm

We need to find the radius of the circle, knowing the circumference, it is equal to 20.41 dm (π = 3.14).

First of all, let’s remember the formula for finding the circumference of a circle in terms of the radius.

The formula for finding the circumference in terms of the radius.

l = 2πR, where l is the circumference, R is the radius of the circle, and the number π is a constant equal to 3.14.

Let us express the radius from the formula. To do this, we divide both sides of the equality by 2π:

R = l / 2π;

Substitute the known values and calculate:

R = 20.41 / (2 * 3.14) = 20.41 / 6.28 = 3.25 dm radius of the circle.