One paper hanger can hang one roll of wallpaper in FIVE HOURS.
So, 55 paper hangers can hang 55 rolls of wallpaper in FIVE HOURS.
The sum of 6 and x is less than or equal to - 20.
Answer: (6+x) ≤ -20
Area = pi * radius²
Area = 3.14159 * 9²
Area = 3.14159 * 81
Area =
<span>
<span>
<span>
254.46879
</span>
</span>
</span>
answer is D
