Question

The radius of the circle is 14cm.find the radius of the circle whose area is double the area of the given Circle

Answer 1

Step-by-step explanation:

Take 14 as r1 and the radius which we have to find as r2.

using the formula for finding the area of a circle,we can find it

Answer 2

Answer:

14√2

Step-by-step explanation:

the radius of the given circle is = 14 cm

the area of the given circle is = πr² = 22/7 × 14 × 14 =(44×14) = 616

the area of the other circle is = 2πr² = (2×616) = 1232

let the radius of the unknown circle be = R

∴   πR²   =   1232

or,  22/7 R² = 1232

or,     R²    =  1232×7/22 = (56× 7)

or,     R     = √{(7×7)×8

or,     R     = 7×2√2 = 14√2