the radius of a circle is 3 cm. what is the circumference of another c

1.	the radius of a circle is 3 cm. what is the circumference of another circle whose area is 49 times that of the first circle ?
Answer» ANSWER: Given the radius of circle is =3 cm so, it area= $\pi 3^{2}$ =9 $\pi$ $cm^{2}$ let the radius of NEW circle be =x cm. So ,its area = $\pi x^{2}$ and its given area is = 499 $\pi cm^{2}$ A\Q $\pi x^{2}$ =499 $\pi cm^{2}$ $x^{2}$ =499 $x$ = $\sqrt{499}$ $x$ = 73 $x$ =21 The radius of new circle is 21 cm* please mark me as a brainlist