circle o has a circumference of approximately 28.3 cm. what is the approximate length of the radius, r? 4.5…

circle o has a circumference of approximately 28.3 cm. what is the approximate length of the radius, r? 4.5 cm 9.0 cm 14.2 cm 28.3 cm

circle o has a circumference of approximately 28.3 cm. what is the approximate length of the radius, r? 4.5 cm 9.0 cm 14.2 cm 28.3 cm

Answer

Explanation:

Step1: Recall the circumference formula

The formula for the circumference of a circle is $C = 2\pi r$, where $C$ is the circumference and $r$ is the radius.

Step2: Solve for the radius

We know $C\approx28.3$ cm. Rearranging the formula for $r$ gives $r=\frac{C}{2\pi}$. Substituting $C = 28.3$ cm and taking $\pi\approx3.14$, we have $r=\frac{28.3}{2\times3.14}=\frac{28.3}{6.28}\approx4.5$ cm.

Answer:

4.5 cm