March-2022-Conditional Statements - Lab -Area of Figures

function caculation(input){
    let shape = input[0];
    let area = 0;
    let a = Number(input[1]);
    let b = Number(input[2]);
    if(shape == "square"){
      area = a * a;
    }
    else if( shape == "rectangle"){
        area = a * b;
    }
    else if( shape == "circle"){
      area = Math.pow(a, 2) * Math.PI;
    }
    else{
        area = (a * b) / 2;
    }
    console.log(area.toFixed(3));
}