Thread: Using Math.Random

Using Math.random need to find the radius of 10 circles and need to find the area of each circle Need help to write a program solution

radius = C/2 * pi. Area? I didn't know there was an area. 10 * radius = close to the total area. Just not quite. A little off but close. This is the closest method I can think of in math.

Sure, here's a simple Java program that uses `Math.random` to generate the radius of 10 circles and then calculates the area of each circle:

```java
public class CircleAreaCalculator {
public static void main(String[] args) {
// Define the number of circles
int numberOfCircles = 10;

// Iterate through each circle
for (int i = 1; i <= numberOfCircles; i++) {
// Generate a random radius between 1 and 10
double radius = Math.random() * 10 + 1;

// Calculate the area of the circle
double area = Math.PI * radius * radius;

// Print the radius and area of the circle
System.out.println("Circle " + i + ": Radius = " + radius + ", Area = " + area);
}
}
}
```

This program generates a random radius for each circle using `Math.random() * 10 + 1`, which generates a random number between 1 and 10 inclusive. It then calculates the area of each circle using the formula `area = π * radius^2`, where π is approximately 3.14159. Finally, it prints out the radius and area of each circle.

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