Question

10. How many times will a solid cube of 4 cm side be cut to
obtain smaller cubes of 2 cm side? (UP B.Ed. 2011]
(a) 2 (6) 3 (C) 5 (d) 7​

Answer 1

using FORMULA

SURFACE AREA of CUBE = 6a^2

put a=32cm for area of cube whose side is 32 we get

6×32cm×32cm = 6144cm^2

put a=4cm for area of cube whose side is 4 we get

6×4cm×4cm = 96cm^2

divide 6144 to 96 for get how many small cubes cut from big cube

6144÷96

we get 64

so we say that 64 cubes are cut from a solid cube