Question

Find the side of cube which is formed by malty three cubes of sides 3 cm, 4cm,5cm

Answer 1

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VOLUME OF CUBE OF SIDE 3 cm = 3×3×3=27
VOLUME OF CUBE OF SIDE 4cm = 4×4×4= 64
VOLUME OF CUBE OF SIDE 5cm = 5×5×5=125

SO, VOLUME OF BIGGER CUBE MADE OF SMALLER CUBES = 27+64+125 = 216 cm3

SO, SIDE OF BIGGER CUBE = cubic root of 216
= 6cm