So...i'm trying to make a computation for this equation.......but how do i make it? and I already made a slider program in which I'm gonna use it as a value of the area and the distance

VOLTAGE

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 using TMPro;
 
 public class VoltValueSlider : MonoBehaviour
 {
     public Slider slider;
     public TextMeshProUGUI sliderText;
 
 
     // Start is called before the first frame update
     void Start()
     {
 
     }
 
     // Update is called once per frame
     void Update()
     {
         sliderText.text = slider.value.ToString("Volt: 0.00");
     }
 }

AREA

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 using TMPro;
 
 public class AreaValueSlider : MonoBehaviour
 {
     public Slider slider;
     public TextMeshProUGUI sliderText;
 
 
     // Start is called before the first frame update
     void Start()
     {
 
     }
 
     // Update is called once per frame
     void Update()
     {
         sliderText.text = slider.value.ToString("Area: 0.00");
     }
 }