Multiple choice general knowledge math & puzzles

PERIMETER OF A CIRCLE

  1. 2x(22/7)xR

  2. (22/7)xR^2

  3. (22/7)^2xR

  4. R^2

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The perimeter (circumference) of a circle is 2 * pi * R. Using 22/7 as an approximation for pi, the formula becomes 2 * (22/7) * R. Option 407798 correctly identifies this geometric formula.