What are the things that you need to consider to make a good weld​

If the distance between two points on the ground is 10 miles and the distance between the same two points on a map is 4 inches, what is the map scale expressed as a ratio?

Aplane cuts a pyramid as shown in the diagram. what is the shape of the cross section? a. a hexagon b. a pentagon c. a square d. a triangle

Explain why the rate of urbanisation is in the way it is between developed and undeveloped countries.