Question

find the radius of a circle whose area is twice the area of a circle of radius 14 cm and answer is 14√2

Answer 1

Answer:

Step-given radius of the first circle ( r ) = 14 cm

   let radius of the second circle = R cm

   According to the given problem ,

area of the second circle = double the area of the first circle

                       πR² = 2 ×πr²

⇒                       R² = (2 × πr² )/ π

⇒                       R² = 2 × r²

⇒                       R = √2 ×r

∴                        R = √2 × 14

                         R = 14√2 cm

Answer 2

Answer:

The correct answer is 19.8 cm✨