Multiple choice

The area of a quadrant of a circle is 81 4 π cm2. What is the area of the circle?

  1. 81 2 π cm2

  2. 243 4 π cm2

  3. 81 π cm2

  4. 27 4 π cm2
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C Correct answer
Explanation

Area of a quadrant = (1/4) * Area of circle. Given (1/4) * A = 81/4 * pi, then A = 81 * pi.

AI explanation

A quadrant represents one fourth of the total area of a circle. Given the quadrant area is 81 over 4 times pi, you multiply this value by 4 to find the full circle area. The total area is 81 times pi square centimeters.

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