Question

The ratio of the radius of two circle is 1:2. Find the ratio of their areas​

Answer 1

Answer:

1/4

Step-by-step explanation:

Let Radius 1 = r= 1x ,

Let Radius 2= R = 2x

            Area of Circle 1               $\pi r^{2}$            $r^{2}$          1x²         1

           ------------------------  =      ----------  =   -----  =   ------ =   -----  

            Area of circle 2              $\pi R^{2}$            $R^{2}$        (2x)²       4

                                  Ans.