Jake ran 6.8 miles yesterday and 10.4 miles today. How many more miles did he run today?

Can you me find the missing length. i attached an image.

Sasha delivers newspapers to subscribers that live within a 4 block radius of her house. sasha's house is located at point (0, -1). points a, b, c, d, and e represent the houses of some of the subscribers to the newspaper. to which houses does sasha deliver newspapers?

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