Answer:
4 units
Step-by-step explanation:
The diameter is the measure from one edge of the circle to the other. The radius is the measure from the center of the circle to the edge.
Therefore, the radius is half of the diameter.
r=d/2
The circle has a diameter of 8 units. Substitute 8 in for d.
r=8/2
Divide
r=4
The radius of the circle is 4 units
