find the volume of a cube, one face of which has an area of 81m2.
nikhat1:
the answer is 729 m3
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If one face's area = 81m²
Formula of area of one face of a cube =a²
Therefore, a²=81m²
=> a=9m
volume of a cube= a³=[9m]³= 729m³
Formula of area of one face of a cube =a²
Therefore, a²=81m²
=> a=9m
volume of a cube= a³=[9m]³= 729m³
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