MHB Calculate Sphere Volume Using (4.0/3.0) Division

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SUMMARY

The discussion focuses on calculating the volume of a sphere using the formula \( V = \frac{4}{3}\pi r^3 \) in Java. It emphasizes the importance of using floating-point division with (4.0 / 3.0) to avoid integer division errors. The provided code snippet initializes the sphere's radius and outlines the structure for computing the sphere's volume, although the actual calculation is not implemented in the example.

PREREQUISITES
  • Java programming fundamentals
  • Understanding of floating-point vs. integer division
  • Basic mathematical concepts related to geometry
  • Familiarity with Java's System.out.println for output
NEXT STEPS
  • Implement the volume calculation in the SphereVolumeCalculator class
  • Explore Java's BigDecimal for precise floating-point arithmetic
  • Learn about unit testing in Java to validate the volume calculation
  • Investigate optimization techniques for mathematical computations in Java
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Java developers, computer science students, and anyone interested in mathematical programming and geometric calculations.

dcs1953
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Given sphereRadius and piVal, compute the volume of a sphere and assign to sphereVolume. Use (4.0 / 3.0) to perform floating-point division, instead of (4 / 3) which performs integer division.

Code:
public class SphereVolumeCalculator {
   public static void main (String [] args) {
      double piVal = 3.14159;
      double sphereVolume = 0.0;
      double sphereRadius = 0.0;

      sphereRadius = 1.0;

     

      System.out.println("Sphere volume: " + sphereVolume);
      return;
   }
}
 
Last edited by a moderator:
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The volume $V$ of a sphere having radius $r$ is given by:

$$V=\frac{4}{3}\pi r^3$$

So, can you use that to construct the needed statement?
 
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