alleryएक आयत की लंबाई 20% बढ़ जाती है और चौड़ाई 10% गिर जाती है; क्षेत्र परिवर्तन?
A12% वृद्धि
B8% वृद्धि
C8% कमी
D10% वृद्धि
Answer & Solution
Correct answer: B. 8% वृद्धि
नया क्षेत्र 1.20 × 0.90 = 1.08 गुना पुराना क्षेत्र है, 8% की वृद्धि।
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