A rectangle is twice as long as it is wide. If the width is a, what is the length of its diagonal ?

A a2
B a3
C a5
D 3a

Correct Answer: a5

ধরি, 36 টাকায় বিক্রি করলে ক্ষতি x টাকা। 72 টাকায় বিক্রি করলে লাভ 2x টাকা। শর্তানুসারে, 36 + x = 72 - 2x বা, x + 2x = 72 - 36 বা, 3x = 36 বা, x = 36/3 বা, x = 12 অতএব খাতাটির ক্রয় মূল্য = 36 + 12 = 48 টাকা। উত্তর : খাতাটির ক্রয় মূল্য = 48 টাকা।
Bissoy MCQ
#গণিত #Bangladesh Bank #চতুর্ভুজ (Quadrilateral) #Bangladesh Bank - Assistant Director - 2004

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