30,00 watts.
Think of the metric system like this: K H D B D C M
Now. you have kilo at the begining and milli at the end. To transition from left to right you multiply by 10 each time. To transition from right to left, you divide by 10 each time.
A) prevent the bone wearing each other out where they touch
(I think) you just divide the length of the bead string the the inches of the beads
(Which equals 4.4 so when simplified is 4)
The opposite of square root is simply square, so try squaring both sides and use algebra
