Discussion
The circumference of a circle is 44 cm. What is its area ? (Take \(\pi = 22/7\))
Answer: B
Correct answer: 154 sq. cm
Find the radius from the circumference first.
\[2\pi r = 44 \quad\Longrightarrow\quad r = \frac{44 \times 7}{2 \times 22} = 7 \text{ cm}\]
\[\text{Area} = \pi r^2 = \frac{22}{7} \times 49 = 154 \text{ sq. cm}\]
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