How far can a snail crawl if it moves at an average speed of 8.0cm/min for: A) 3 min? B) 3 hour?

Distance = velocity x time, so for the first
scenario

8cm/min x 3 min = 24 cm
traveled.

There are 60 minutes in one hour, so 3 hours x 60
minutes = 180 minutes.

8 cm/min x 180 minutes = 1440 cm
traveled

This assumes the snail is crawling in a straight
line, of course - if it changes direction then we have to figure out whether to answer
the question with distance, which is simply an expression of how
much ground the snail has covered (like the odometer reading on a car), or
displacement, which tells us how far the snail is from its starting
point, measured in a straight line (regardless of whether the snail's path was straight
or not).

The first link below explains this idea in more
detail. The second link will take you to a nifty calculator that will actually do these
problems for you, as long as you input the data correctly.Always pay attention to the
units when you are doing these.