R602
10. If a gallon of paint covers 400 square feet, how many gallons are needed to paint a triangular deck with sides of 65 ft, 72 ft, and 88 ft? 11. Find the area of a regular nonagon (9 sides) inscribed in a circle of radius 10 inches. 12. A parallelogram has sides of 18 and 26 ft, and an angle of 39°. a. ................
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