Find how much the water level of the well is decreasing

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SUMMARY

The discussion focuses on calculating the decrease in water level of a well with a diameter of 110mm when 40 liters of water are pumped out. The user successfully determined the radius to be 0.55dm and applied the formula for the area of a circle, πr², resulting in an area of approximately 0.95dm². By dividing the volume of water pumped (40 liters) by the area, the decrease in water level was calculated to be 4.2m, expressed in scientific notation as 4.2 x 10^1 m.

PREREQUISITES
  • Understanding of basic geometry, specifically the area of a circle
  • Familiarity with volume calculations in liters
  • Knowledge of unit conversions between millimeters, decimeters, and meters
  • Ability to perform calculations involving π (pi)
NEXT STEPS
  • Study the formula for the area of a circle in more depth
  • Learn about unit conversions between metric measurements
  • Explore the concept of volume and its applications in real-world scenarios
  • Investigate the effects of inflow and outflow in fluid dynamics
USEFUL FOR

This discussion is beneficial for students in mathematics, engineers involved in fluid mechanics, and anyone interested in practical applications of geometry and volume calculations.

J.Eriksson
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I have a problem and I do not how to solve the problem. So please write how I should solve the question.

A water well has a diameter of 110mm. Water can be pumped from the well into the tank. Every time the pump is started 40 l of water is pumped away. Find how much the water level of the well is decreasing, ingoring the inflow of water
 
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What formulas do you think might be relevant to this problem? What have you tried?

These are the sections that you deleted when you posted your problem. They are there for a reason, to help you get started at solving this problem.
 


Well,
I solve my own problem! I did this way:
110mm is the same as 1,1dm
1,1/2=0,55 (radius)
then I use the formel πr^2
π0,55^2=0.95
40/0.95= 42dm
42dm=4,2m
Power of ten: 4,2X10^1 m
 

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