Guys please help me I can't solve this math problem.

What is the answer to this problem 7 * 5/6

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?

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side