Any suggestions for a word problem for the equation : 5/12 * 1/6?

You make and sell triangular flags. each flag has a base of  3.53.5  feet and a height of  2.52.5  feet. fabric for the flags costs  $0.40$0.40  per square foot. what is the cost to make one flag?

Sketch one cycle if the cosine function y=2cos2theta

Divide. write in the simplest form. 4 1/6 divided by 10