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2023 AMC 10A Question 15

AMC10 · 2023 AMC 10A

Question 15

An even number of circles are nested, starting with a radius of $1$ and increasing by $1$ each time, all sharing a common point. The region between every other circle is shaded, starting with the region inside the circle of radius $2$ but outside the circle of radius $1.$ An example showing $8$ circles is displayed below. What is the least number of circles needed to make the total shaded area at least $2023\pi?$

Question illustration
  1. $46$
  2. $48$
  3. $56$
  4. $60$
  5. $64$