Question

"CodeHS Gymnastic Mats"

I cant get it to calculate the area of the Mat or the Room. Any help?

Here is my code:

function start(){

var widthMat= readInt("What is the width of the mat in feet?");

var lengthMat= readInt("What is the length of the mat in feet?");

function calculateArea(width,length){

var area = width*length;

return area;

}

var widthRoom = readInt("What is the width of the room in feet?");

var lengthRoom = readInt("What is the length of the room in feet?");

println("You will need 10 mats to cover the room");

}

function calculateArea(width,length){

var area = width*length;

return area;

}

Answer 1

It looks like your calculateArea() function is defined within the start() function. This means that it cannot be accessed outside of the start() function, including in the println() statement at the end. You can fix this by moving the calculateArea() function outside of the start() function so that it can be called from anywhere in your code.

Here's an updated version of your code that should work:

function start() {

var widthMat = readInt("What is the width of the mat in feet?");

var lengthMat = readInt("What is the length of the mat in feet?");

var areaMat = calculateArea(widthMat, lengthMat);

println("The area of the mat is " + areaMat + " square feet.");

var widthRoom = readInt("What is the width of the room in feet?");

var lengthRoom = readInt("What is the length of the room in feet?");

var areaRoom = calculateArea(widthRoom, lengthRoom);

println("The area of the room is " + areaRoom + " square feet.");

var matsNeeded = Math.ceil(areaRoom / areaMat);

println("You will need " + matsNeeded + " mats to cover the room.");

}

function calculateArea(width, length) {

var area = width * length;

return area;

}

In this version of the code, the calculateArea() function is defined outside of the start() function, so it can be accessed from anywhere in the code. The start() function now calls calculateArea() twice, once for the mat and once for the room, and saves the results to variables. It then calculates the number of mats needed to cover the room and prints out all the results using println().

Note that I also added a line to round up the number of mats needed using Math.ceil(), since you can't buy a fraction of a mat.