Answer:
126
Step-by-step explanation:
Total volume of sand = pi/3*(6^2)*(15) + pi*(6)^2*(30) = 1260*pi mm^3
So it will therefore take 1260*pi/10*pi = 126 seconds for all of the sand from the top hourglass to drip down to the bottom hourglass.
Answer:
what grade
Step-by-step explanation:
You can rewrite this equation as "f - g - 1". That's all that I see that you can do with this.
