यदि \(15^2-5^2\) को आयत में बदला जाए, तो क्षेत्र कितना होगा?
If \(15^2-5^2\) is changed into a rectangle, what will be the area?
Explanation opens after your attempt
C. \(200\)
Concept
\(15^2-5^2=(15+5)(15-5)=20\times10=200\). Exam tip: calculate quickly using difference of squares.
Why this answer is correct
The correct answer is C. \(200\). \(15^2-5^2=(15+5)(15-5)=20\times10=200\). Exam tip: calculate quickly using difference of squares.
Exam Tip
\(15^2-5^2=(15+5)(15-5)=20\times10=200\) है। परीक्षा में अंतर के वर्गों से तेज गणना करें।
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