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JavaScript The Solution

Posted by Amy Tomey
Amy Tomey
12,847 Points

geometry.js:16 Uncaught ReferenceError: math is not defined at circle (geometry.js:16) at geometry.js:26

What am I missing?

function area (width,height) { return width*height; }

function volume (width,height,length) { return width*height*length; }

function circle (radius) { return math.PI * Math.pow(radius,2); }

function sphere(radius) { return (4/3) * math.PI * Math.pow(radius,3); }

console.log (area(5,22)); console.log (volume(4.5,12.5,17.4)); console.log (circle(7.2)); console.log (sphere(7.2));

1 Answer

Cameron Childres
Cameron Childres
11,820 Points
Cameron Childres
Cameron Childres
11,820 Points

Hi Amy,

The built-in Math object begins with a capital letter. If you change both instances of "math.PI" to "Math.PI" the object will be referenced correctly and your code should run.

You can pinpoint this quickly from looking at the error:

Uncaught ReferenceError: math is not defined at circle (geometry.js:16) at geometry.js:26

This is saying math isn't defined, it doesn't reference anything. It's pointing to the circle function and saying the error occurred on line 16 of geometry.js, when called from line 26 of geometry.js.

Hope this clarifies things! Let me know if you need any additional help.