What is the speed of a fish that swims 10 meters in a total of 20 seconds? what would you do to figure this out

You use the formula

                 Speed  =  (distance covered)
                                           divided by
                            (time to cover the distance)  .

After posting so many speed/distance/time problems and getting the answers
with the full solutions, you should be be able to do these on your own by now.

An isosceles triangle has two equal sides that are usually longer, so the answer is 13¨