No links/downloads. Please help me with my math homework

Step-by-step explanation:

Let's baby-step this to make it easy, ok? Begin by getting rid of all the fractions, which means we will eliminate the 3 from the 1/3 by multiplying both sides be 3:

If we want to eventually isolate the r, we need to move the h and the pi. Do this by division, since each of these is multiplied by r-squared. Doing that gives us:

Lastly, to undo a square, we have to take the square root. We will do that for both sides of the equals sign:

The positive is out front there to indicate that we don't want the negative value since distance is a measure that will never be negative.

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

step-by-step explanation: