The radius of the circle with a circumference of 15.7 units is approximately 2.5 units.
The formula for the circumference of a circle is C = 2πr, where C represents the circumference and r represents the radius of the circle.
To find the radius of a circle with a given circumference of 15.7 units, we can rearrange the formula to solve for r.
First, divide both sides of the equation by 2π to isolate the variable r:
C/2π = r
Now substitute the given value of the circumference (15.7 units) into the equation:
r = 15.7 / 2π
To find the radius, we need to evaluate this expression.
Using the approximation π ≈ 3.14, we can simplify the equation:
r ≈ 15.7 / (2 * 3.14)
r ≈ 2.5 units
Therefore, the radius of the circle with a circumference of 15.7 units is approximately 2.5 units.
The complete question could be "Given the formula for the circumference of a circle, C = 2πr, and a circle with a circumference of 15.7 units, what is the radius of the circle?"