If the area of a circle is 180 cm2, what would the area be of a 40 degree arc of that circle?

You are responsible for designing a new city. you are inspired by pierre charles l'enfant, who laid out the streets of our nation's capital. numbered streets run north and south, and lettered streets run east and west. avenues are named after states, and they intersect the streets on a diagonal. the streets are parallel and the intersections form similar triangles. 18th st. is 454 meters long and the intersection of 18th and k st. is 207 meters from connecticut ave. if 19th st. and k st. is 385 meters from connecticut ave., what is the length of 19th st.?

We just started the introduction into circles and i have no idea how to do this.

1. how do you convert the repeating, nonterminating decimal 0. to a fraction? explain the process as you solve the problem.