Question

Area of a cir cle as 9π.What is the radius of the circle​

Answer 1

$\textbf{Given:}$

$\textsf{Area of circle is}\;\mathsf{9\pi\;square\;units}$

$\textbf{To find:}$

$\textsf{Radius of the circle}$

$\textbf{Solution:}$

$\underline{\textsf{Formula used:}}$

$\boxed{\textsf{Area of a circle of radius 'r' is}\;\mathsf{\pi\,r^2\;square\;units}}$

$\mathsf{Area\;of\;the\;circle=9\,\pi}$

$\implies\mathsf{\pi\,r^2=9\,\pi}$

$\implies\mathsf{r^2=9}$

$\implies\boxed{\mathsf{r=3\;units}}$

$\textbf{Answer:}$

$\textsf{Radius of the circle is 3 units}$

$\textbf{Find more:}$

If the area of a semi-circle protractor is 44/7 sq cm. Find the diameter

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