Q. 54.5( 12 Votes )
Find the approximate change in the surface area of a cube of side x metres caused by decreasing the side by 1%.
Answer :
It is given that the surface area of cube (S) of a side x
⇒ S = 6x2
= (12x)Δx
= (12x)(0.01x)
= 0.12x2
Therefore, the approximate change in the surface area of a cube of side x metres caused by decreasing the side by 1% is 0.12x2.
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