What is the circumference of the semicircle in this figure? express your answer in feet. 18.84 ft 6.28 ft 56.52 ft 28.26 ft

What is the slope of the line (-7,2) (4,6)

An incoming airplane is x miles due north from the control tower at an airport. a second incoming airplane is y miles due east of the same control tower. the shortest distance between the two airplanes is z miles. which of the following functions would best model the situation above?

△def is similar to △stu. write a proportion that contains st and su.