Set 3: Circles (Beginner)

[Variation 1] **Choice B is the best answer.** Area = pi times r squared = pi times 6 squared = 36pi

Explanation

Answer: B

PROBLEM

Recent studies show that a circle has radius 6. What is its area? (Express answer as a number times pi)

A circle has radius 6. What is its area? (Express answer as a number times pi)

42pi

36pi

✓ Correct

12pi

6pi

Detailed Explanation

[Variation 1] Choice B is the best answer. Area = pi times r squared = pi times 6 squared = 36pi

Why others are wrong:

A: 42pi is incorrect because it does not satisfy the equation.

C: 12pi is incorrect because it does not satisfy the equation.

D: 6pi is incorrect because it does not satisfy the equation.

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