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1. If the radius of a circle is tripled, the circumference is

  • A. multiplied by 3
  • B. multiplied by 3
  • C. multiplied by 3
  • D. multiplied by 3

Answer: Option A

Explanation:

When the radius of a circle is tripled, the circumference is multiplied by 3.

The formula for the circumference of a circle is C = 2πr, where "C" is the circumference and "r" is the radius. If you triple the radius, the new radius becomes 3r.

So, the new circumference will be:

New Circumference = 2π(3r) = 6πr

This is three times the original circumference (2πr), which means it's multiplied by 3.

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