The radius of a frisbee is 5 inches. What is the circumference of the frisbee in terms of (pi)?

What is the missing constant term in the perfect square that starts with x^2 -20x

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Is there an x intercept in the equation 60*1.15^x