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What is the radius of a circle whose diameter is 18 cm?

easy MCQ 1 mark Class 9 · Mathematics · Introduction to Euclid Geometry
  1. 6 cm
  2. 8 cm
  3. 9 cm
  4. 12 cm
Answer
9 cm

The correct answer is 9 cm — Compute cm.

Step-by-step solution

  1. The radius of a circle is half the diameter.
  2. Compute cm.
Common mistake: Confusing diameter with radius

Concept tested: Circle radius

Published · How this solution was prepared and checked

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