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Mathematics, 02.04.2021 15:50 juliannabartra
Your iris controls the amount of light that enters your eye by changing the size of your pupil. An eye is shown resembling a large circle. The pupil of the eye is marked resembling a smaller circle inside the large circle. The iris of the eye surrounding the pupil is also marked. The radius of the large circle is labeled 6 millimeters. The distance between the large circle and the small circle is labeled x. a. Write a polynomial in standard form that represents the area of your pupil. Write your answer in terms of $\pi$ . Area = mm $^2$ b. The width $x$ of your iris decreases from 4 millimeters to 2 millimeters when you enter a dark room. How many times greater is the area of your pupil after entering the room than before entering the room?
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