how to make a ui square unity code example

Example: unity square

using UnityEngine;public class Example : MonoBehaviour
{

float f = 2;
float p = 3;

    void Start()
    {
        print(Mathf.Pow(6, 1.8f)); //Return 6 to the power of 1.8
        print(Mathf.Pow(f, p)); //Return 2 to the power of 3 which equals 8 
    }
}