Question
Find the circumference of a circle whose diameter is:$7\ cm.$
✓
Answer
We know that the circumference of a circle of radius $r$ is given by $C =2\pi\text{r}$
Here, $d = 7\ cm$
Then, $r = 1 = 3.5\ cm$
$\Rightarrow\text{C}=2\times\frac{22}{7}\times3.5=22\text{cm}$
Here, $d = 7\ cm$
Then, $r = 1 = 3.5\ cm$
$\Rightarrow\text{C}=2\times\frac{22}{7}\times3.5=22\text{cm}$
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