figureAreaV2

function figureArea(input) {
//Input
    let figure = input.shift();
    let n = Number(input.shift());
    let n2 = Number(input.shift());

//Calculations

//Rectangle - w * h
if (figure == 'rectangle') {
    let rectangleArea = n * n2;
    console.log(rectangleArea.toFixed(3));
}
//Square - x * x
else if (figure == 'square') {
    let squareArea = Math.pow(n, 2);
    console.log(squareArea.toFixed(3));
}
//Circle - PI * r * r
else if (figure == 'circle') {
    let circleArea = Math.PI * Math.pow(n, 2);
    console.log(circleArea.toFixed(3));
}
//Triangle - b * h / 2
else if (figure == 'triangle') {
    let triangleArea = n * n2 / 2;
    console.log(triangleArea.toFixed(3));
    }
}

figureArea([
    'circle',
    6,
]);