10

Set 5: Circles (Beginner)

Explanation

Answer: C

PROBLEM

Recent studies show that a circle has diameter 10. What is its radius?

A circle has diameter 10. What is its radius?

A.

3

B.

10

C.

5

✓ Correct
D.

7

Detailed Explanation

[Variation 1] Choice C is the best answer. Radius = Diameter / 2 = 10 / 2 = 5

Why others are wrong:
A: 3 is incorrect because it does not satisfy the equation.
B: 10 is incorrect because it does not satisfy the equation.
D: 7 is incorrect because it does not satisfy the equation.

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