Which of the figures appear to be congruent?

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?