What is the circumference of a circle with a radius of 20 units?
Difficulty: Easy
About this MCQ
Easy ACT item. Correct choice: B. 40π.
- A. 42π
Why not A: “42π” is not 40π.
- B. 40π ✓
- C. 20π
Why not C: “20π” is not 40π.
- D. 400π
Why not D: “400π” is not 40π.
Correct answer
B. 40π
Explanation
40π is the value that answers “What is the circumference of a circle with a radius of 20 units” (option B). Option A (42π) is a different value from 40π. Option C (20π) is a different value from 40π. Option D (400π) is a different value from 40π. Keep 40π as the ACT fact for this stem.
Source: Original practice question, MCQsHub
Tags: Math, American Exams, Geometry, ACT
Submitted by: MCQsHub Editorial
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