What is 2.4% as a decimal

You are assembling pieces of an iron gate to complete a fence. the finished gate will look like the one below. in order to assemble the gate it is important to under how the pieces are related. part 1: how are pies 1 and 2 in the archway related? part 2: how are the rectangular sections 5 and 6 in the center of the gate related to each other?

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

Is the square root of 4 plus the square root of 16 rational?