RRB Junior Engineer Stage 1 Model Papers 2

Question : 9 of 99

Marks: +1, -0

If the total surface area of a cube is

96 cm^2

, its volume is

Solution:

Total surface area of cube

=96 cm^2

6a^2= 96 cm^2

a^2= 16 cm^2 ⇒ a=4cm

Now, volume of cube

= a^3 ⇒ (4)^3= 64 cm^3

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