alleryএটা আয়তক্ষেত্ৰৰ দৈৰ্ঘ্য 20% বৃদ্ধি পায় আৰু প্ৰস্থ 10% হ্ৰাস পায়; এলেকাৰ পৰিৱৰ্তন?
A12% বৃদ্ধি
B8% বৃদ্ধি
C8% হ্ৰাস পায়
D10% বৃদ্ধি
Answer & Solution
Correct answer: B. 8% বৃদ্ধি
নতুন এলেকাটো পুৰণি এলেকাৰ 1.20 × 0.90 = 1.08 গুণ, 8% বৃদ্ধি।
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