Question

question 2 (2 out of 6)
~ question
goal: learn how to write a simple java program.
assignment: in the ancient land of codegypt, a new square pyramid was discovered. archeologists measured the height and the base side of the pyramid to be 150 and 200 meters long. your task is to help them compute the volume of the pyramid using the following formulas:
volume = \frac{basearea \cdot height}{3}
basearea = baseside^2
write a complete java program with class name pyramidvolume that prints to screen the volume of the pyramid expressed in cube meters.

Explanation:

Step1: Calculate base area

Given base - side = 200 meters. Using the formula $BaseArea=BaseSide^{2}$, we have $BaseArea = 200^{2}=40000$ square meters.

Step2: Calculate volume

Given height = 150 meters. Using the formula $Volume=\frac{BaseArea\times Height}{3}$, we substitute the values: $Volume=\frac{40000\times150}{3}$.
$40000\times150 = 6000000$, and $\frac{6000000}{3}=2000000$ cubic meters.

Step3: Write Java program

public class PyramidVolume {
    public static void main(String[] args) {
        int baseSide = 200;
        int height = 150;
        int baseArea = baseSide * baseSide;
        int volume = (baseArea * height)/3;
        System.out.println("The volume of the pyramid is " + volume + " cubic meters");
    }
}

Answer:

The volume of the pyramid is 2000000 cubic meters. The Java program is:

public class PyramidVolume {
    public static void main(String[] args) {
        int baseSide = 200;
        int height = 150;
        int baseArea = baseSide * baseSide;
        int volume = (baseArea * height)/3;
        System.out.println("The volume of the pyramid is " + volume + " cubic meters");
    }
}