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