Question

what happen to area of circle, if its radius is doubled? write it's moral value also ​

Answer 1

Answer:

when you double the radius, the area goes up by 4 times because 2 squared is 4. The area will always go up by the square of how much the radius goes up. By contrast, the circumference will only double -- from 12.56 to 25.12 because you do not square the radius (or diameter) -- you just multiply it by pi.

Answer 2

Answer:

Circle will increase its size by 4 times if radius is doubled

Step-by-step explanation:

Area of a circle = (Pi * r^2)

                          If Radius becomes 2r

the Area = (Pi *(2r)^2)

              = Pi * 4r^2

               = 4 *Pi* r^2

              = 4 times older circle area

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