Two cities are 1400 km apart and lie on the same north-south line. The latitude of the northernmost city is 83 N. What is the latitude of the other city? The radius of the Earth is approximately 6400 km.

The density of the cube is 40

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square

Where is the picture?