Silk Ribbon Designs Perimeter And Area Geometry Question?

Perimeter and area geometry question? - silk ribbon designs

Click on the link to the image:
http://i39.tinypic.com/1t2c.jpg
(Note: Some of each circle and the circle has the same radius)
-What is the size of the area without shadows? If this region must be covered with a material that costs $ 16 per square foot, which is the cost of materials?
"They want the borders in the dark with a special material made of silk. How long is a strip of adhesive tape is required for the design of the border? The cost of materials is $ 20 per linear foot.
-What is the total cost of the necessary equipment? Use mathematics to justify your answer please.