The round base of a copper tea kettle has a diameter of 18 centimeters. What is the base's circumference?

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).