Alright, so I have a question that says this:
A regular octagon has sides mesuring about 4 cm. If the octagon is divided into 8 congruent triangles, each has a height of 5 cm. What is the area of the octagon?
I don't know if I divide my answer in half, like so:
5x4=20
Do I divide my answer in half now or go on to multiply 20 by 8?