A radius of a circle is 3 cm. What is its area?
  1. 3.14 cm2
  2. 28.26 cm2
  3. 282.6 cm2
  4. 2.826 cm2
Explanation
Answer: B -A circle with a radius of 3 cm has an area of 28.26 cm2. The formula for the area of a circle is 3.14 (?) multiplied by the radius squared. 3² = 9, so 3.14 x 9 is 28.26 cm2.
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