Find the area of the circle. Use 22/7 as an approximation for py

Iwill give brainliest. suppose tommy walks from his home at (0, 0) to the mall at (0, 5), and then walks to a movie theater at (6, 5). after leaving the theater tommy walks to the store at (6, 0) before returning home. if each grid square represents one block, how many blocks does he walk?

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i

Lines a and b are perpendicular. if the slope of line a is 3, what is the slope of line b?