Final answer:
The radius of the circle with a diameter of 9.8 cm is 4.9 cm.
Step-by-step explanation:
To find the radius of a circle when you know the diameter, you can use the formula:
Radius = Diameter ÷ 2
In this case, the diameter is 9.8 cm, so the radius would be:
Radius = 9.8 cm ÷ 2 = 4.9 cm
Therefore, the radius of the circle is 4.9 cm.
Learn more about radius of a circle