Two circular tables are placed in the yard for a small ceremony. One table has a radius of 62inches. The other table has a diameter of 10 ft. What is the difference between the circumference of both tables?

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point