# Torus Surface Area Calculator

Surface Area of Torus=

The Torus Surface Area Calculator an online tool which shows Torus Surface Area for the given input. Byju’s Torus Surface Area Calculator is a tool which makes calculations very simple and interesting. If an input is given then it can easily show the result for the given number.

Surface Area of Torus =Â (2Ï€R)(2Ï€r)

## How to Use Torus Surface Area Calculator?

The steps to find the torus surface area using calculator is given here:

Step 1: Enter the value of outer radius or big radius (R)

Step 2: Enter the value of inner radius or small radius (r)

Step 3: Click on the Solve button. The value of surface area of torus will appear on the screen.

## What is Surface area of Torus?

A torus is a three-dimensional shape created by revolving a small circle with radius r in space about an axis which is coplanar to a bigger circle of radius R. The formula to calculate the surface area of torus is given by:

Surface area of Torus =Â (2Ï€R)(2Ï€r)

SA = 4Â Ï€2 Rr

Also, the volume of Torus is given by:

Volume =Â (2Ï€R)(Ï€r2)

V = 2Ï€2Rr2

### Solved Examples

Q.1: What is theÂ  Surface area of Torus which has an inner radius equal to 5 unit and outer radius equal to 10 unit?

Solution: Given, Outer radius = 10 unit

Torus Surface Area =Â 4Â Ï€2 Rr

SA (Torus) =Â 4Â Ï€2Â (10) (5)

SA (Torus) =Â 1973.92 sq.unit.

Q.2: What is the surface area if the torus has inner radius equal to 15 unit and outer radius equal to 25 unit?

Solution:

Given, Outer radius = 15 unit