# 9) The approximate change in the volume of a cube of side x metres caused by increasing the side by 3% is (A) 0.06                      (B) 0.6                  (C) 0.09                      (D) 0.9

Side of cube increased by 3% = 0.03x m
The volume of cube =
we know that  is approximately equal to dy
So,

Hence, the approximate change in volume V of a cube of side x metres caused by increasing the side by 3% is
Hence, (C) is the correct answer

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