如何创建一次p元素函数并在每个函数中使用它在屏幕上打印

下面是我的更长版本的代码，我需要一个更短的方法。我想创建一个函数来创建 ap 元素并附加它，但我面临的问题是变量范围。请帮忙！！！下面的代码运行良好，但版本较长。

    const input = document.querySelector('.input-num');

    function squared(num){
        
        const para = document.createElement('p');
        document.body.appendChild(para);
        para.textContent = "square of " + num + " is " + num * num;
    }

    function cubed(num){
        const para = document.createElement('p');
        document.body.appendChild(para);
        para.textContent = "cube of " + num + " is " + num * num * num;
    }

    function areaOfCircle(num){
        const para = document.createElement('p');
        document.body.appendChild(para);
        para.textContent = "Area of circle with radius as " + num + " is " + Math.PI * num * num;
    }

    function circumferenceOfCircle(num){
        const para = document.createElement('p');
        document.body.appendChild(para);
        para.textContent = "Circumference of circle with radius as " + num + " is " + 2 * Math.PI * num;
    }

    function factorial(num){
        if(num < 0) return undefined;
        if(num == 0) return 1;
        let initialNum = num;
        let x = num -1;
        while(x > 1){
            num *= x;
            x--;
        }
        const para = document.createElement('p');
        document.body.appendChild(para);
        para.textContent = "factorial of " + initialNum + " is " + num;
    }
    

    input.onchange = function(){

        const num = parseFloat(input.value);
        if(isNaN(num)){
            const para = document.createElement('p');
            document.body.appendChild(para);
            para.textContent = 'You need to enter a number';
        } else{
            squared(num);
            cubed(num);
            areaOfCircle(num);
            circumferenceOfCircle(num);
            factorial(num);
        }
    }