A 4 cm x 6 cm rectangle sits inside a circle with radius of 11 cm. What is the area of the shaded region?
Round your final answer to the nearest hundredth.

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An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?