Final answer:
The radius of the circle is 8.22 units and the diameter is 16.44 units.
Step-by-step explanation:
To find the radius and diameter of a circle, we can use the formula for circumference:
Circumference = 2πr
Given that the circumference is 51.5, we can solve for the radius by rearranging the formula:
r = Circumference / (2π)
Substituting the value of π as 3.14, we get:
r = 51.5 / (2 × 3.14)
= 8.22
Therefore, the radius of the circle is 8.22 units.
The diameter of a circle is twice the radius, so the diameter of this circle is:
Diameter = 2 × 8.22
= 16.44 units.