For each problem, decide whether the circumference of the circle of the area of the circle is most useful for finding a solution explain your reasoning. A cars wheels spin at 1000 revolution per minute the diameter of the wheels is 23 inches you want to know how fast the car is travelling.

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit