Question

lesson 6: circles
calculating circumference and area
which of the following is the circumference of a circle with a diameter of 10 cm? use 3.14 for π.
a. 300 cm
b. 314 cm
c. 31.4 cm
d. 3.14 cm
check answer

Explanation:

Step1: Recall the formula for circumference

The formula for the circumference of a circle is $C = \pi d$, where $d$ is the diameter.

Step2: Substitute the given values

Given $d = 10$ cm and $\pi=3.14$, then $C=3.14\times10$.
$C = 31.4$ cm

Answer:

C. 31.4 cm