GED Math Practice Test

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Prepare for the GED Math Test with our comprehensive quiz. Practice with multiple choice questions and get detailed hints and explanations to boost your confidence and skills. Enhance your test readiness today!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

If the diameter of a circle is 10 units, what is the radius?

2.5 units
5 units
10 units
20 units

The correct answer is: 5 units

The radius of a circle is defined as half of its diameter. Therefore, to find the radius when the diameter is given, you simply divide the diameter by 2. In this case, the diameter is 10 units. By dividing this value by 2, you get: Radius = Diameter / 2 = 10 units / 2 = 5 units. This confirms that the radius is 5 units, making this option the correct answer. Understanding the relationship between the diameter and radius is fundamental, as it allows you to calculate the radius of any circle when the diameter is known.