alleryआयताची लांबी वाढते 20% आणि रुंदी कमी होते 10%; क्षेत्र बदल?
A12% वाढ
B8% वाढ
C8% घट
D10% वाढ
Answer & Solution
Correct answer: B. 8% वाढ
नवीन क्षेत्र 1.20 × 0.90 = 1.08 जुन्या क्षेत्राच्या पटीने, 8% वाढ आहे.
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