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Added surface area calculation for pyramid #6890

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Added surface area calculation for pyramid #6890

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18 changes: 18 additions & 0 deletions src/main/java/com/thealgorithms/maths/Area.java
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Original file line number Diff line number Diff line change
@@ -1,4 +1,22 @@
package com.thealgorithms.maths;
/**
* 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;
}

/**
* Find the area of various geometric shapes
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