Amanager of a park buys 17 3/4 tons of sand for a playground. the manager pays $475.70. the price per ton of sand the manager buys is constant. what is the cost, in dollars, per ton of sand?

Arectangle has a perimeter of 20 cm. the length, x cm, of one side of this rectangle is uniformly distributed between 1 cm and 7 cm. find the probability that the length of the longer side of the rectangle is more than 6 cm long.