Question

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the diameter of the first circle is 5 cm, and point c is the center of the circle. find the length of the radius and the approximate circumference. you can use your zearn calculator to help you solve.

radius (cm)

diameter (cm)

circumference (cm)

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5

Explanation:

Step1: Calculate radius from diameter

The radius is half the diameter.
$\text{Radius} = \frac{\text{Diameter}}{2} = \frac{5}{2} = 2.5$ cm

Step2: Calculate circumference

Use the circumference formula $C = \pi d$.
$C = \pi \times 5 \approx 15.71$ cm

Answer:

Radius (cm)	Diameter (cm)	Circumference (cm)