On a map 1 cm = 50 mi. On the map, Grand Canyon is 4 cm from Phoenix. What is the actual distance?

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

Through non-collinear points there is exactly one plane.

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*