Hi

This question is giving me so much trouble, I mean i do not know how to start it!?

A wire 70 inches long is to be cut into two pieces. One of the pieces will be bent into the shape of a circle and the other into the shape of an equilateral triangle. Where should the wire be cut in order that the sum of the areas of the circle and the triangle is: a) a minimum? b) a maximum ?

So far i know that for an Equilateral Triangle all sides is the same so it would be 3x and the remaining will be 70-3x:

Im really confused as to what Steps I should do to get my answer.

Thanks