Question

a cubical wooden block of edge 2.1m is cut into small cube each having an edge of 35cm determine the number of small cubes that can be obtained

Answer 1

216 is the required number of small cubes.
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Answer 2

Notice that 2.1m = 210cm. 6 x 35cm = 210 cm
So each edge of the large cube is 6 * ( smaller cube edge size )
Let's describe a new unit sc = 35cm

The length of the side of the large cube is 6 sc's
Its volume is 6 * 6 * 6 sc^3 = 216 sc's
216 is the number of smaller cubes that can be obtained.
( assuming there is no waste as a result of cutting )

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