Question:
The area of a circle is \(154\ \text{cm}^2\). Its diameter is:
The area of a circle is \(154\ \text{cm}^2\). Its diameter is:
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When areas involve \(154\), try \(\pi=\frac{22}{7}\) to spot perfect squares quickly.
Updated On: Oct 27, 2025
- \(14\) cm
- \(28\) cm
- \(7\) cm
- \(21\) cm
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The Correct Option is A
Solution and Explanation
\(\pi r^2=154\Rightarrow r^2=154\cdot\frac{7}{22}=49\Rightarrow r=7\) cm.
Diameter \(=2r=14\) cm.
Diameter \(=2r=14\) cm.
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