Atape measure is used to measure length, and length is how long something is. Given these facts, what is a tape measure used for among the following options:
- in the frog family
 - how long something is
 - Males and females
 - how dense something is
 - the texture of something
 - how much liquid there is
 - objects that have mass
 - lowered energy cost


 

  how long something is       