WAEC - Mathematics (2014 - No. 3)

The volume of a cube is 512cm3. Find the length of its side
6cm
7cm
8cm
9cm

Explanation

volume of cube = L x L x L

512cm3 = L3

L3 = 512cm3

L = 3\(\sqrt{512}\)

L (512)\(\frac{1}{3}\)

= (29)\(\frac{1}{3}\)

23 = 8cm

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