Question
Find the circumference of a circle whose radius is:
10.5cm
10.5cm
✓
Answer
Circumference $=2\pi\text{r}$
$=2\times \frac{22}{7}\times10.5$
$=66\text{cm}$
$=2\times \frac{22}{7}\times10.5$
$=66\text{cm}$
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