Here are your measurements:
Length = 20 arm spans
Width = 10 arm spans
If in one arm span, there are 10 thumbs, and the area of the field is 200 arm span squared, what would the area be in thumb squared?
If you need some help, we've broken down the steps:
Step 1: Write the number and unit that you wish to convert. In your case, you are converting 200 arm spans squared, which is also:
arm spans ² 10² thumbs² 20000 thumbs² OR 2.0 x 104 thumbs²
_______________ x ____________ =
arm span ²
NOTE: Remember to not only square the unit, square the number too!
0 thumbs = 10 thumbs ² WRONG
10 thumbs = 10² thumbs² RIGHT (10 thumbs x 10 thumbs)