Question

If the area of a circle is 154 cm², then the circumference of the circle is:

A 22 cm Correct Answer Incorrect Answer
B 44 cm Correct Answer Incorrect Answer
C 36 cm Correct Answer Incorrect Answer
D 11 cm Correct Answer Incorrect Answer

Solution

Area of a circle =πr2 => 154 = 22/7 × r 2 =>r 2= 49 => r = 7 cm Therefore the circumference of the circle = 2πr = 2 × 22/7 × 7 = 44 cm

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