Question

Find the radius of the circle whose area is: (Take 3.14) (c)78.50 and the answer is 5 cm​

Answer 1

$\Huge{\underline{\underline{\blue{\mathfrak{ Solution :- }}}}}$

$\sf Area = \pi r^{2}\\\\78.50 = 3.14\times r^{2}\\\\r^{2} = \frac{78.50}{3.14}\\\\r^{2} = 25\\\\r = \sqrt{25}\\\\r = \sqrt{5\times 5}\\\\r = 5\ cm$