Your company sells cylindrical hyperbaric chambers. You need a formula field that calculates the volume of a cylinder for you, rounded to the nearest whole number, given its radius and height. Use the existing mathematical formula for the volume of a cylinder, V = πr2h, where r is the radius of the cylinder, h is the height, and π is the constant Pi. Note: Although this formula field might best be created on a custom object, for simplicity, we’ll create this formula on the Opportunity object.
>Create 2 custom fields of type Number on the Opportunity object: ‘radius’ with a resulting API name of ‘radius__c’ and ‘height’ with a resulting API name of ‘height__c’.
>The formula should be named ‘Cylinder Volume’, with the resulting API name ‘Cylinder_Volume__c‘ and should be created on the Opportunity object.
>The formula should reference the custom fields ‘radius__c‘ and ‘height__c‘.
>The formula should use 3.14159 as an approximation of Pi.

Heres the challenge that im stuck on. i have created the 2 custom fields. What im stuck on is where do we create the formula. Do we put it in the custom fields or is there another place u insert it?

thanks if anyone can help
 

Hi all, I'm getting this error message from the checker "Challenge not yet complete... here's what's wrong: 
The 'Basic Account User' profile did not have the appropriate object and field-level security for the Account object"
I think I've tried every possible way to set up the Basic Account User and Pofiles. I have tried allowing the filed in the profile but not in the permission set, and vice versa as well as a mix of the two. How am I supposed to set up the Basic Account User?? I have been editing the Account settings under the Standard Object Permissions section of the profile, but if there is something else I am supposed to be editing, please let me know. Thanks!