Set 5: Circles (Beginner)

[Variation 2] **Choice A is the best answer.** Area = pi times r squared = pi times 5 squared = 25pi

Explanation

Answer: A

PROBLEM

Intriguingly, a circle has radius 5. What is its area? (Express answer as a number times pi)

A circle has radius 5. What is its area? (Express answer as a number times pi)

25pi

✓ Correct

10pi

5pi

30pi

Detailed Explanation

[Variation 2] Choice A is the best answer. Area = pi times r squared = pi times 5 squared = 25pi

Why others are wrong:

B: 10pi is incorrect because it does not satisfy the equation.

C: 5pi is incorrect because it does not satisfy the equation.

D: 30pi is incorrect because it does not satisfy the equation.