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Added surface area calculation for pyramid #5450

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Added surface area calculation for pyramid #5450

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2 changes: 2 additions & 0 deletions README.md
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Expand Up @@ -18,3 +18,5 @@ Please read our [Contribution Guidelines](CONTRIBUTING.md) before you contribute

## Algorithms
Our [directory](DIRECTORY.md) has the full list of applications.

THIS IS MY CHANGES.
20 changes: 20 additions & 0 deletions src/main/java/com/thealgorithms/maths/Area.java
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Expand Up @@ -192,4 +192,24 @@ public static double surfaceAreaCone(final double radius, final double height) {
}
return Math.PI * radius * (radius + Math.pow(height * height + radius * radius, 0.5));
}


/**
* Calculate the surface area of a pyramid with a square base.
*
* @param sideLength side length of the square base
* @param slantHeight slant height of the pyramid
* @return surface area of the given pyramid
*/
public static double surfaceAreaPyramid(final double sideLength, final double slantHeight) {
if (sideLength <= 0) {
throw new IllegalArgumentException("Must be a positive sideLength");
}
if (slantHeight <= 0) {
throw new IllegalArgumentException("Must be a positive slantHeight");
}
double baseArea = sideLength * sideLength;
double lateralSurfaceArea = 2 * sideLength * slantHeight;
return baseArea + lateralSurfaceArea;
}
}