The solution would be like this for this specific problem:
Volume of a cylinder = pi * r^2 * h
Volume of a cone = 1/3 * pi * r^2 * h
Total Height = 47
Height of the cone = 12
Height of the cylinder = 35
If the top half is filled with sand, then:
volume (sand) = pi * 4^2 * 36
volume (cone) = 1/3 * pi * 4^2 * 12
Total volume = 1960.353816 cubic millimeters
353816 / (10 * pi) = 62.4 seconds.
It will take 62.4 seconds until all of the sand has dripped to the bottom of the hourglass.
Answer:
Bill has 13 books. Bob has 26 books.
Step-by-step explanation:
52 divided by 2 = 26
26 divided by 2 = 13
13 x 2 = 26 and 26 + 26 = 52
Greetings!
We can find out how many miles driven in 1.5 hours buying creating a simple expression:

Evaluate:

In 1.5 hours, the person would've driven
84mph.
Hope this helps.
-Benjamin
216.05 is the answer because you have to divide $4,321 by 100, and multiply that by 5.