Perimeter and Area of Composite Figures > help?
a) Find the area of the outer ring, to the nearest square centimetre.
b) What percent of the total area is the outer ring?
This is a question from the perimeter and area of composite figures unit that I'm working on independently at the moment. So yeah if you have the answer to this question, I would really appreciate it. Please help me, asap. Oh & this is grade 9 academic math, hope that helps?