भुजा (2a+3) वाले वर्ग में बड़े वर्गाकार भाग का क्षेत्रफल क्या होगा?
In a square with side (2a+3), what will be the area of the large square part?
Explanation opens after your attempt
B. \(4a^2\)
Concept
The large square part has side (2a), so its area is \(4a^2\). Exam tip: square the whole term (2a).
Why this answer is correct
The correct answer is B. \(4a^2\). The large square part has side (2a), so its area is \(4a^2\). Exam tip: square the whole term (2a).
Exam Tip
बड़े वर्गाकार भाग की भुजा (2a) है इसलिए क्षेत्रफल \(4a^2\) है। परीक्षा में पूरे पद (2a) का वर्ग करें।
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