math-base-geometry/libs/tri-dimensional/Sphere.js

utils for math geometry

const utils = require("./../utils");
const handleDecimal = utils.handleDecimal;
const PI = utils.PI;

function round(value, deciamlNr) {
    const res = Number(Math.round(parseFloat(value + 'e' + deciamlNr)) + 'e-' + deciamlNr);

    return res;
}

function surfaceArea(r, decimalLimit = false) {
    const res = 4 * PI * Math.pow(r, 2);

    return handleDecimal(res, decimalLimit);
}

function volume(r, decimalLimit = false) {
    const res = (4 / 3) * PI * Math.pow(r, 3);

    return handleDecimal(res, decimalLimit);
}

exports.surfaceArea = surfaceArea;
exports.volume = volume;