1. For each problem, decide whether the circumference of the circle or the area of the circle is most useful for finding a solution. Explain your reasoning.
a. A car's wheels spin at 1000 revolutions per minute. The diameter of the wheels is 23
inches. You want to know how fast the car is travelling.
b. A circular kitchen table has a diameter of 60 inches. You want to know how much fabric is
needed to cover the table top.
C. A circular puzzle is 20 inches in diameter. All of the pieces are about the same size. You
want to know about how many pieces there are in the puzzle.
d. You want to know about how long it takes to walk around a circular pond.