Why is it NOT possible to make a right triangle using lengths 10 feet, 60 feet and 65 feet?

What is the perimeter of trapezoid jklm? + units 2 + + units 9 + units 9 + + units

Need solving this 2nd limit problem.

The population of a city has increased by 35% since it was last measured. if the current population is 86,400 what was the previous population