Question

Find the circumference of a circle with diameter of 10 cm.

Answer 1

Answer:

Option C, $31.4\ cm$

Step-by-step explanation:

Step 1:  Determine the formula

Formula → $C = 2*\pi *r$

Step 2:  Determine the radius

$Radius = \frac{Diameter}{2}$

$Radius = \frac{10\ cm}{2}$

$Radius = 5\ cm$

Step 3:  Determine the circumference

$C = 2 * \pi * (5\ cm)$

$C = 10\ cm * \pi$

$C = 31.4\ cm$

Answer:  Option C, $31.4\ cm$