After the area of a square becomes three times of the original, its side length becomes several times of the original

After the area of a square becomes three times of the original, its side length becomes several times of the original

The side length becomes 3 times of the original

The side length of a square has increased three times, and the area has increased several times

The side length of the square has increased three times, and the area has increased 15 times
(4x)^2-x^2=15x^2

When the side length of a square increases by N times, how many times does its area increase? When the edge length of a square increases by N times, how many times does its surface area increase? When the volume of a square increases by N times? When the radius of a circle increases by N times, how many times does its area increase? When the radius of a sphere increases by N times, how many times does its surface area increase? When the volume of a cylinder increases by N times, how many times does its height increase? Otherwise, the height does not change, How many times should the bottom radius be enlarged?

1、n^2；
2、n^2；n^3；
3、n^2；
4、n^2,n^3；
5. Root n, root n