Question

The radius of a circle is 14 cm. Find the radius of the circle whose area is double the area of
the given circle is​

Answer 1

Step-by-step explanation:

area of circle=πr^2

=22/7x14x14

=22x28

=616cm

Answer 2

Step-by-step explanation:

1,

find the area of given circle

using for πr²

22/7×14²

= 22/7×196

= 616 cm² is the are of given circle

2,

if the area of second Circuit is doubled of given circle

so, 616 × 2 = 1232 cm²

1232 = 22/7 × r²

1232×7/22 = r²

392 = r²

√392 = r