The area of a circle is $154 cm^2$. Find the circumference of the circle. (Take $π =\frac{22}{7}$)
Answer & explanation
Correct answer: option 3
Area of circle = $Πr^2$ = 154
$r^2$ = 154 × 7/22 = 49
r = 7
Circumference = 2Πr = 2 × 22/7 × 7 = 44 cm
The correct answer is Option (3) → 44 cm