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The edge of a cube is decreasing at the ...

The edge of a cube is decreasing at the rate of 0.04 cm/sec. If the edge of cube is 10 cm, then the rate of decrease of its surface area is

A

`0.6 cm^(2)//sec`

B

`1.2 cm^(2)//sec`

C

`2.4 cm^(2)//sec`

D

`4.8 cm^(2)//sec`

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The correct Answer is:
D
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