What is the approximate circumference of a circle with a diameter of 40 inches? (careful you need radius so 40/2)(use π = 3.14)(c= 2 *π*r) (a.) 125.6 in.(b.) 63 in.(c.) 251 in.

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?