10000 Kyu 8 | Area Of a Square · danielex1999/CodeWars-Java@6ff9a19 · GitHub
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Kyu 8 | Area Of a Square
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‎pom.xml

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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>3.8.1</version>
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<scope>test</scope>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-math3</artifactId>
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<version>3.6.1</version>
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</dependency>
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</dependencies>
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</project>

‎src/main/java/kyu8/areaOfASquare/Geometry.java

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package kyu8.areaOfASquare;
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import org.apache.commons.math3.util.Precision;
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public class Geometry {
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public static double squareArea(double A) {
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double result = Math.pow(2 * A / Math.PI, 2);
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return Precision.round(result, 2);
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}
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}

‎src/main/java/kyu8/areaOfASquare/README.md

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# Area of a Square
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Complete the function that calculates the area of the red square, when the length of the circular arc ```A``` is given
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as the input. Return the result rounded to two decimals.
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<img src="https://user-images.githubusercontent.com/69739890/118408122-a27e8300-b649-11eb-97cb-e04b4519362c.png"/>
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Note: use the π value provided in your language (```Math::PI```, ```M_PI```, ```math.pi```, etc)

‎src/test/java/kyu8/areaOfASquare/testGeometry.java

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package kyu8.areaOfASquare;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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public class testGeometry {
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private static final double DELTA = 1e-15;
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@Test
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public void basicTests() {
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assertEquals(1.62, Geometry.squareArea(2),DELTA);
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assertEquals(0, Geometry.squareArea(0),DELTA);
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assertEquals(80, Geometry.squareArea(14.05),DELTA);
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}
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}

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