Question

How many cubes of edge 1/2 cm are required to build a cube of side 3 cm

Answer 1

Answer:

Step-by-step explanation:

As 1/2 + 1/2 = 1 so to make the side of 3cm 6 cubes of 1/2cm is req to build and 36 cubes are req to build the whole cube. as cube has 6 sides so 6 x 6 = 36 cubes.

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Answer 2

216 cubes of edge 1/2 cm are required to build a cube of side 3 cm

Step-by-step explanation:

Side of smaller cube =$\frac{1}{2} cm = 0.5 cm$

Volume of cube = $Side^3 = 0.5^3 = 0.125 cm^3$

Side of big cube = 3 cm

Volume of big cube = $Side^3 = 3^3 = 27 cm^3$

So, No. of small cubes required to make big cube =$\frac{27}{0.125}=216$

Hence 216 cubes of edge 1/2 cm are required to build a cube of side 3 cm

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