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Type: Multiple-Choice
Category: Circles
Level: Grade 11
Standards: HSG-GMD.A.1
Author: nsharp1
Created: 6 years ago

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Circles Question

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Grade 11 Circles CCSS: HSG-GMD.A.1

Thus far, only a circle of radius 1/2 was used. Which of the following formulas would correctly relate this circle with a new circle of unknown circumference, C, and radius, r. Why?
  1. Cπ=r12 because all circles are similar.
  2. C=12rπ since the new circle will depend on the measurements of the circle already investigated.
  3. C2=πr2 because the area of a circle is related to its circumference.
  4. C=nπ,r=n2 since the new circle's circumference and radius will depend upon the number of sides of an inscribed regular polygon.