Question

Wes and Leslie create an ice rink by spraying water on an area that is 28 feet by 21 feet. The ice is 6 inches think. Estimate the volume of the ice in their rink.

Answer 1

Answer: it’s about 3,600 cubic feet

Explanation:

28–>30
21–>20
6–>6

Now you can do it easily with mental math:
30*20*6=3600