Question

The radius of a circle is 14 cm, find the
radius of another circle whose area double the area
of the given circle.​

Answer 1

Answer:

Step-by-step explanation:

radius of a circle =14 cm

area of the circle= π r²

                           =22/7 * 14 *14

                           =22*2*14

                           = 44*14

                           =616 cm²

now double the area =616*2= 1232 cm²

πr²=1232

22/7 r²=1232

22 r² =1232*7

r² =(1232*7)/22

r²= 392

r= 19.7 cm

Answer 2

Answer:

Let A2 and r2 be the area and radius of the second circle respectively whose area is double the area of circle A1. Hence the radius of the circle A2 is 14√2 cm.