Question

find the missing measurements for each circle. you can use 3.14 as an approximation for pi. the diameter of the circle is 5.20 cm, and point b is the center. find the length of the radius and the approximate circumference of the circle.

Explanation:

Step1: Find the radius

The radius $r$ of a circle is half of the diameter $d$. Given $d = 5.20$ cm, so $r=\frac{d}{2}=\frac{5.20}{2}=2.60$ cm.

Step2: Find the circumference

The formula for the circumference $C$ of a circle is $C = \pi d$. Using $\pi\approx3.14$ and $d = 5.20$ cm, then $C\approx3.14\times5.20 = 16.328$ cm.

Answer:

Radius (cm): 2.60, Circumference (cm): 16.328