Question

find the radio of the circle whose areas are 308 square centimetre

Answer 1

radius is
$7 \sqrt{2}$cm

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Answer 2

$\underline{ \bold{ \red{question = }}}$
¤¤ Find the radius of the circle whose 308^2 cm.


$\underline{ \bold{ \green{solution.................}}}$


$\bold{area \: of \: circle \: = \pi \: {r}^{2} }$

$\bold{308 = \frac{22}{7} \times {r}^{2} } \\ \\ \bold{ \: \frac{308 \times 7}{22} = {r}^{2} }$


$\bold{ {r}^{2} = 98} \\ \\ \bold{ \: r \: = \sqrt{98} = 7 \sqrt{2} cm}$