In redesigning a cold storage, the length is increased by 30%, the breadth is increased by 50% and the height is reduced by 20%. What is the net increase in the volume of the redesigned cold storage compared to the previous design?
A. 50%
B. 56%
C. 60%
D. 40%
E. None of them
সঠিক উত্তরঃ
B.
56%
Explanation:
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