You are Here: Home >< Maths

# Torus watch

1. Hi guys,
I am stuck with my IB Maths IA for SL and I don't know what to do. I was thinking about doing calculus such as finding the volume of tori, but is it too easy? I don't really know how to apply and relate it more to maths, so that I could write more and maybe get a better grade. May someone help me please?

Thank you!!
2. You don't need to do any calculus. A torus is basically a curved cyliner, and you find the volume the same way. You find the area of the base of the cylinder (the cross section of the torus) and times it by the length (the diameter of the torus which goes through the middle of the structure).
So if you let r be the radius of the cross section and R be the radius of the torus itself (from the centre of mass to the middle of a cross-section). Then it would be:
(the cross section) times by (the diameter of the torus)

### Related university courses

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: October 27, 2016
The home of Results and Clearing

### 3,399

people online now

### 1,567,000

students helped last year
Today on TSR

### IT'S TODAY!

A-level results chat here

### University open days

1. Bournemouth University
Fri, 17 Aug '18
2. University of Bolton
Fri, 17 Aug '18
3. Bishop Grosseteste University
Fri, 17 Aug '18
Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams