What is 1/5 of 45?my 10 yr. old.

9

Explanation:
To get the fraction of a number, you will simply multiply the fraction by the given number.

For the given, we want to find  of 45.
This can be computed as follows:
 of 45 =  * 45

= 

= 

= 9

Therefore,  of 45 is 9

Hope this helps :)

Polar coordinates is 8,9