26. The opening of a tunnel that travels through a mountainside can be modeled by
y =
13
measured in feet. The x-axis represents the ground.
= a (x - 13)(x + 13), where x and y are
a. Find the width of the tunnel at ground level.
b. How tall is the tunnel?

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.?

Find the dimensions of the circle. area = 64π in.² r= in.

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?