0.2963
324/1,000 = 81/250
0.324 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 324/1000. You can simplify this rational fraction if required.
3/24 as a fraction in its simplest form is 1/8
3.24 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its rational equivalent is 324/100 which can be simplified. But simplification could mean that you could lose information about the precision of the fraction.
Square root of 324 is 18 or 3 times the square root of 2
9 x 36 = 324
324/144 = 9/4
324/25
-324/100. This can be further simplified into 81/25.
324 times 35 is 11,340.
4 times 81 = 324