यदि एक आयत की लंबाई \(\sqrt{22}+\sqrt{7}\) और चौड़ाई \(\sqrt{22}-\sqrt{7}\) है तो क्षेत्रफल क्या होगा?
If a rectangle has length \(\sqrt{22}+\sqrt{7}\) and breadth \(\sqrt{22}-\sqrt{7}\), what will be its area?
Explanation opens after your attempt
B. (15)
Concept
Area is (\(\sqrt{22}+\sqrt{7}\)\(\sqrt{22}-\sqrt{7}\)=22-7=15). Conjugate dimensions can give a rational area.
Why this answer is correct
The correct answer is B. (15). Area is (\(\sqrt{22}+\sqrt{7}\)\(\sqrt{22}-\sqrt{7}\)=22-7=15). Conjugate dimensions can give a rational area.
Exam Tip
क्षेत्रफल (\(\sqrt{22}+\sqrt{7}\)\(\sqrt{22}-\sqrt{7}\)=22-7=15) है। संयुग्मी आयामों से परिमेय क्षेत्रफल मिल सकता है।
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