Question

find the missing measurements for each circle. you can use 3.14 for π. the diameter of the circle is 27.20 cm, and point c is the center. find the length of the radius and the approximate circumference of the circle.

Explanation:

Step1: Recall radius - diameter relationship

The radius $r$ of a circle is half of the diameter $d$. Given $d = 27.20$ cm, the formula is $r=\frac{d}{2}$.

Step2: Calculate the radius

$r=\frac{27.20}{2}=13.60$ cm.

Step3: Recall circumference formula

The formula for the circumference $C$ of a circle is $C = \pi d$. Using $\pi\approx3.14$, and $d = 27.20$ cm.

Step4: Calculate the circumference

$C=3.14\times27.20 = 85.308$ cm.

Answer:

Radius: 13.60 cm
Circumference: 85.308 cm