भुजा (a+3b) वाले वर्ग में \(b^2\) वाले छोटे वर्ग का क्षेत्रफल कौन सा होगा?
In a square of side (a+3b), what will be the area of the small square containing \(b^2\)?
Explanation opens after your attempt
C. \(9b^2\)
Concept
The small part has side (3b), so its area is \(9b^2\). Exam tip: square the coefficient too.
Why this answer is correct
The correct answer is C. \(9b^2\). The small part has side (3b), so its area is \(9b^2\). Exam tip: square the coefficient too.
Exam Tip
छोटे भाग की भुजा (3b) है इसलिए क्षेत्रफल \(9b^2\) है। परीक्षा में गुणांक का भी वर्ग करें।
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