Multiple choice

What is the perimeter of the semicircle with radius $14\ cm$?

  1. $72\ cm$
  2. $22\ cm$
  3. $88\ cm$
  4. $44\ cm$
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A Correct answer
Explanation

Perimeter of a semicircle = pi * r + 2 * r = (22/7 * 14) + (2 * 14) = 44 + 28 = 72 cm.

AI explanation

The perimeter of a semicircle is the sum of its curved half circumference and its diameter, given by the formula pi * r + 2 * r. Substituting the radius of 14 cm gives (22/7) * 14 + 2 * 14. This simplifies to 44 + 28, resulting in a total perimeter of 72 cm.

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