A2-digit number is one more than 6 times the sum of its digits. if the digits are reversed, the new number is 9 less than the original number. find the original number

The formula for the volume of a cylinder is V = π r^2 h

We know what the volume (V) and PI is so:

536.94 = 3.14 r^2 h

But since we don't know the height, it is not possible to find the radius as we cannot find the value of a variable if there are still more than 1 variable in an equation in which we don't know the value of

I would suggest to delete this question and add the height or tell us the height of the cylinder in the comments