What is the difference between 8753 and 967?

Which geometric principle is used to justify the construction below?

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?

Write the ratio as a fraction in lowest terms. compare in inches. 5 feet to 50 inches