someone please help me Given the center and a point on a circle, you can use thi
ID: 3622307 • Letter: S
Question
someone please help meGiven the center and a point on a circle, you can use this formula to find the radius of a circle. Write a program that prompts the user to enter the center and a point on the circle. The program should then output the circle’s radius, diameter, circumference, and area. Your program must have at least the following methods:
a. distance: This method takes as its parameters four numbers that represent two points in the plane and returns the distance between them.
b. Radius: This method takes as its parameter four numbers that represent the center and a point on the circle, calls the method distance to find the radius of the circle, and returns the circle’s radius.
c. Circumference: This method takes as its parameter a number that represents the radius of the circle and returns the circle’s circumference. (if r is the radius, the circumference is 2(Pi)r.)
d. Area: This method takes as its parameter a number that represents the radius of the circle and returns the circle’s area. (If r is the radius, the area is (Pi)r^2.)
e. Assume that Pi =3.1416
Explanation / Answer
please rate import java.util.Scanner; import java.math.*; public class radius { public float area(float radius) { return (float) (3.14*radius*radius); } public float circ(float radius) { return (float) (2*3.14*radius); } public float distance(int x1, int y1,int x2, int y2) { float dist=(float) Math.sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)); return dist; } public float radius(int x1, int y1,int x2, int y2) { float rad=distance(x1,y1, x2, y2); return rad; } public static void main(String args[])throws Exception { Scanner sc=new Scanner(System.in); int x1=sc.nextInt(); int y1=sc.nextInt(); int x2=sc.nextInt(); int y2=sc.nextInt(); radius r=new radius(); float r1=r.radius(x1,y1,x2,y2); System.out.println("circumfrence "+r.circ(r1)+"Area "+r.area(r1)+"Radius "+r1); } }
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