Question
Find the radius of a circle whose perimeterter and are are numerically equal.
✓
Answer
let r be the radius of a circle.Then, area of a circle $=\pi\text{r}^2$
Perimeter of a circle $=2\pi\text{r}$
It is given that,
Area of a circle = Perimeter of a circle
$\Rightarrow\pi\text{r}^2=2\pi\text{r}$
$\Rightarrow \text{r}= 2 \text{ units}$
Perimeter of a circle $=2\pi\text{r}$
It is given that,
Area of a circle = Perimeter of a circle
$\Rightarrow\pi\text{r}^2=2\pi\text{r}$
$\Rightarrow \text{r}= 2 \text{ units}$
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