What was the goal of the committed of correspondence

Which number on the map indicates the farthest reaches of alexander conquests?

In general which explains why communist revolutions did not happen

The square pyramid below has a height of 12 centimeters and a slant height of 20 centimeters. the square base of the pyramid has side lengths of 32 centimeters. what is the lateral area of the pyramid? 384 cm2 640 cm2 768 cm2 1280 cm2