Main street and washington avenue meet at a right angle. a large park begins at this corner, joe's school
lies at the opposite corner of the park. usually joe walks 3.6 miles along main street and then 1.5 miles up
washington avenue to get to school. today he walked in a straight path across the park and returned
home along the same path. what is the difference in distance between the two round trips?

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

What’s the answer ? use the picture to see the problem

The tile along the edge of a triangular community pool needs to be replaced? ?