Eighths and their multiples are common fractions which I recommend memorizing, but to actually solve this, you use the literal meaning of a fraction and divide 5 by 8. See the long-division below (it was surprisingly difficult to type, so I hope it helps!).
To round 0.625 to the nearest hundredth, we go to the second decimal place, which is 5, so we round up to 0.63.
The area is 1680 ft. squared
Your answer is 3/5, the picture below shows how sin cos tan work!
22h=22
So h=1
This answer is the only mistake in the equation