Question

a stop sign has the shape of and octagon with each side measuring 0.5ft. to make a scale model to the sign, every dimesion is multiplied by 1/20. how is the ratio of th areas related to the ratio of the corrsesponding dimensions? what is the ratio of the ares?

Answer 1

The ratio of the areas is (1/20)^2 = 1/400 if ANY figure is reduced in its linear dimesnions by 1/20.

It does not matter if it is an octagon or a triangle