Question

How many cubes each of side 2 cm are needed to make a large cube with side 20 cm?

Answer 1

for this we should find the volume of cube of side 2cm and cube of side 20cm
volume of cube =a³(or) a×a×a
volume of cube of 2cm =2×2×2cm³(or)2³cm³
volume of cube of 2cm=8cm³
volume of cube of 20cm=20×20×20cm³(or) 20³cm³
volume of cube of 20cm=8000cm³
now divide to know how many cubes needed cubes needed=8000cm³/8cm³
cubes needed=1000


therefore number of cubes of 2cm needed to form a cube of 20cm is 1000


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