How many cubes of edge half cm are required to build a cube of side 3 cm?
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Step-by-step explanation:
Volume of a cube = side^3
Volume of a cube of side 3cm = 3cm x 3cm x 3cm = 27cm^3(centimetre cube)
Half cm = 0.5cm
Volume of a cube of side 0.5cm = 0.5^3 = 0.125cm^3
Number of cubes of side 0.5cm required to build a cube with 3cm = Volume of cube with side 3cm/Volume of cube with side 0.5cm
= 27/0.125
= 27 x 1000/0.125 x 1000(this and the next step is used only to remove the decimal point, so it's not necessary. You can simply jump to the last step)
= 27000/125
= 216
Therefore, number of cubes required is 216
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