# Functions

```
def function_name(parameter1, parameter2, ...):
	Code to run
	return result
```
> Code and Return should be indented.

```
def volume(width, height, length):
  return width * height * length
```
> the function named 'volume' is defined.
 
```
print(volume(5, 8, 2))
```
```
80
```

** Return is used to save a result for the next use. ***
> Print only shows the result once and does not save it.

```
def volume(width, height, length):
  return width * height * length
```
```
volume1 = volume(5, 8, 2)
print(volume1)
```
```
80
```

```
def surface_area(width, height, length):
  return 2 * (width * height + height * length + width * length)
```
```
print(surface_area(2, 4, 6))
```
```
88
```

```
area1 = surface_area(2, 4, 6)
print(area1)
```
```
88
```