The wheels of a car are of diameter 80cm each. How many complete revolutions does each wheel make in 10 minutes when the car is travelling at a speed of
66km per hour?

The circumference of a circle is 5 pi cm. what is the area of the circle?

If given an equation of a line such as -1/2x+6 how would you create an equation of a line parallel and perpendicula to this line that goes through another point such as (4,10)

Find the difference (8ab+a+2) - (3ab+6)