Question

find the volume of a cube one face of which has an area of 81 m square

Answer 1

Side =√Area = √81 = 9m .  Now, Volume = ( Side) ³=9³=729m³

Answer 2

area = 81 m

81m= x times x

x = 9 m

volume of cube= side times side times side

9 times 9 times 9

= 729 meters

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