Question
Find the radius of a circle whose circumference is:
$52.8\ cm.$
$52.8\ cm.$
✓
Answer
Let the radius of the circle be $r\ cm.$
Circumference of the circle $(C) =52.8\text{cm}$
$\Rightarrow2\times\frac{22}{7}\times\text{r}=52.8$
$\Rightarrow\text{r}=\frac{52.8\times7}{2\times22}=8.4\text{cm}$
Circumference of the circle $(C) =52.8\text{cm}$
$\Rightarrow2\times\frac{22}{7}\times\text{r}=52.8$
$\Rightarrow\text{r}=\frac{52.8\times7}{2\times22}=8.4\text{cm}$
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