Work out the perimeter of this semicircle. Take it to be 3.142 and write down all of the digits given by your calculator.
18 cm give your answer in cm​

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.?

Rectangle leg this 11feet and perimeter of 38feet what is the width of the rectangle in feet

Ineed to know the answer right now! !