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After stepping into a room with unusual lighting, Bridgette's pupil has a radius of 3 millimeters. What is the pupil's diameter?
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After stepping into a room with unusual lighting, Bridgette's pupil has a radius of 3 millimeters. What is the pupil's diameter?

User Alex Nichols
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The diameter is 6 millimeters wide. Radius is half of the diameter so you would multiply the radius by 2. This leaves us with 3 x 2 = 6
Hope this helps!
User Matty J
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