Mathematics Answer, Explanation and Revision Hints
एक वर्गाकार मैदान की भुजा (x) मीटर है। यदि भुजा (10) मीटर बढ़ाने पर क्षेत्रफल (1700) वर्ग मीटर बढ़ता है, तो (x) क्या है? / A square field has side (x) m. If increasing the side by (10) m increases the area by (1700) square m, what is (x)?
Correct Answer: B. (80). Explanation: क्षेत्रफल वृद्धि ((x+10)2-x-2=1700) है। इससे (20x+100=1700), इसलिए (x=80) है। / The area increase is ((x+10)2-x-2=1700). This gives (20x+100=1700), so (x=80).
Which concept should I revise for this Mathematics MCQ?
The area increase is ((x+10)2-x-2=1700). This gives (20x+100=1700), so (x=80).
What exam hint can help solve this Mathematics question?
क्षेत्रफल वृद्धि ((x+10)2-x-2=1700) है। इससे (20x+100=1700), इसलिए (x=80) है।
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