The answer is 230. You need to move the decimal 2 space to the right!
You have to divide the amount of meters he walked by the time he spent, so 37.5 divided by 3. That equals 12.5 meters per minutes.
To find the volume of something, you do the area times the height. In this case you already know the volume so you solve it like this:
(x represents the height since you don't know the value)
1440= 144 * x
1440 = 144x
1440/144= 144x/144
10 = x
Your height is 10:)
