An hourglass consists of two sets of congruent composite figures on either end. Each composite figure is made up of a cone and a cylinder.

Each cone of the hourglass has a height of 12 millimeters. The total height of the sand within the top portion of the hourglass is 47 millimeters. The radius of both the cylinder and cone is 4 millimeters. Sand drips from the top of the hourglass to the bottom at a rate of 10π cubic millimeters per second. How many seconds will it take until all of the sand has dripped to the bottom of the hourglass?

Question

An hourglass consists of two sets of congruent composite figures on either end. Each composite figure is made up of a cone and a cylinder. 
  
Each cone of the hourglass has a height of 12 millimeters. The total height of the sand within the top portion of the hourglass is 47 millimeters. The radius of both the cylinder and cone is 4 millimeters. Sand drips from the top of the hourglass to the bottom at a rate of 10π cubic millimeters per second. How many seconds will it take until all of the sand has dripped to the bottom of the hourglass?

anonymous · Answer

please with this problem 
First things first! You decide to focus on one size of pizza when opening your restaurant. Once you establish a good customer base, you can expand and offer additional sizes.

Decide whether you’re going to focus on creating a small, medium, large, or extra-large pizza and what the diameter of that size pizza should be. Conduct some research about pizza sizes using the Internet or by calling stores in your area. Record the diameters you found during your research, and make yours slightly larger to increase competition!