Preservation And Packing (PACK-1A) Practice Test

If a cylinder has a radius of 15 inches, what is its diameter in inches?

30 inches 15 inches 45 inches 60 inches

Correct Answer:

30 inches

Explanation:

Diameter is twice the radius—the width across the circle through its center. So with a radius of 15 inches, multiply by 2 to get the diameter: 15 × 2 = 30 inches. The diameter therefore is 30 inches. The other numbers come from treating the radius as the base or mixing up multiples (15 is the radius, 45 is three times the radius, 60 is four times the radius).

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