The volume of a cube is 512cm3 Find the length ... - WAEC Mathematics 2014 Question
The volume of a cube is 512cm3. Find the length of its side
A
6cm
B
7cm
C
8cm
D
9cm
correct option: c
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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