30 meters - I applied ratio and proportion when solving:
5:3 = x:18
3x = 5(18)
x = 30 meters
It’s called an onomatopoeia, they are used a lot in comic books. :)
If you walk outside your door and look up you'll see that the sky is what's up. It made me put more than "the sky." But there ya go. That is what's up.
