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After stepping into a room with unusual lighting, Shivani's pupil has a diameter of 8 millimeters8\,\text{millimeters}. What is the pupil's radius?\newline_____\_\_\_\_\_ millimeters

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Full solution

Q. After stepping into a room with unusual lighting, Shivani's pupil has a diameter of 8 millimeters8\,\text{millimeters}. What is the pupil's radius?\newline_____\_\_\_\_\_ millimeters
  1. Understand relationship between diameter and radius: Step 11: Understand the relationship between diameter and radius.\newlineThe radius is half of the diameter.\newlineGiven diameter dd = 88 mm.\newlineRadius rr = d/2d / 2.
  2. Calculate the radius: Step 22: Calculate the radius.\newlineRadius = 82=4\frac{8}{2} = 4 mm.

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