Question

find the missing measurements for each circle. you can use 3.14 as an approximation for pi. circle f has a diameter of 18.40 cm. what is the radius and the approximate circumference? radius (cm) diameter (cm) circumference (cm) 18.40

Explanation:

Step1: Calculate the radius

The radius $r$ of a circle is half of the diameter $d$. Given $d = 18.40$ cm, so $r=\frac{d}{2}=\frac{18.40}{2}=9.20$ cm.

Step2: Calculate the circumference

The formula for the circumference $C$ of a circle is $C = \pi d$. Using $\pi\approx3.14$ and $d = 18.40$ cm, we have $C\approx3.14\times18.40 = 57.872$ cm.

Answer:

Radius: 9.20 cm, Circumference: 57.872 cm