### Introduction

In this Section we show how the concept of integration as the limit of a sum, introduced in Section 14.1, can be used to find volumes of solids formed when curves are rotated around the $x$ or $y$ axis.

#### Prerequisites

- be able to calculate definite integrals
- understand integration as the limit of a sum

#### Learning Outcomes

- calculate volumes of revolution

#### Contents

1 Volumes generated by rotating curves about the x-axis2 Volumes generated by rotating curves about the y-axis