Unity : circle formation

CircleFormation.cs

using UnityEngine;
using System.Collections;

public class TestScript : MonoBehaviour {

    public GameObject obj;

    private int points;
    private double radius;
    private Vector3 center;

	// Use this for initialization
	void Start () {
        points = 20;
        radius = 10;
        center = new Vector3(0, 0, 0);

        float slice = 2 * Mathf.PI / points;
        for (int i=0; i< points; i++)
        {
            float angle = slice * i;
            int newX = (int)(center.x + radius * Mathf.Cos(angle));
            int newZ = (int)(center.z + radius * Mathf.Sin(angle));
            GameObject clone = (GameObject) Instantiate(obj, new Vector3(newX, 0, newZ), Quaternion.identity);
        }
	}
	
	// Update is called once per frame
	void Update () {
        
    }
}