Question

A circle has a diameter of 10 cm. What is the best approximation of its area? Use 3.14 for pi.....you need radius not diameter in the formula! (Hint: A = π r2 )

78.5 sq cm


314 sq cm


31.4 sq cm


15.7 sq cm

Answer 1

This 15.7 is the correct answer

Answer 2

If it has a diameter of 10, divide it by 2 to get Radius (5) because Area = πr²

Then you do r * π *r which would be 78.5. so C is your answer.

Explanation: