यदि एक आयत की लंबाई \(\sqrt{14}+\sqrt{5}\) और चौड़ाई \(\sqrt{14}-\sqrt{5}\) है तो क्षेत्रफल क्या होगा?
If a rectangle has length \(\sqrt{14}+\sqrt{5}\) and breadth \(\sqrt{14}-\sqrt{5}\), what will be its area?
Explanation opens after your attempt
B. (9)
Concept
Area is (\(\sqrt{14}+\sqrt{5}\)\(\sqrt{14}-\sqrt{5}\)=14-5=9). Conjugate dimensions can give a rational area.
Why this answer is correct
The correct answer is B. (9). Area is (\(\sqrt{14}+\sqrt{5}\)\(\sqrt{14}-\sqrt{5}\)=14-5=9). Conjugate dimensions can give a rational area.
Exam Tip
क्षेत्रफल (\(\sqrt{14}+\sqrt{5}\)\(\sqrt{14}-\sqrt{5}\)=14-5=9) है। संयुग्मी आयामों से परिमेय क्षेत्रफल मिल सकता है।
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