find the volume of cube whose total surface area is 486cm square
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Answered by
8
Answer:
total surface area of a cube= 6a²
6a²= 486
a² =486/6
a² = 81
a =√81
a = 9
Volume of cube = a³
=9 ³
=729 cm³
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Answered by
4
As we know that :
Total Surface Area of cube = 6a² where, a = edge of cube
According to question :
6a² = 486
=> a² = 81
=> a = 9cm
Now, Volume of cube = a³
=> Volume = (9)³ = 729cm³
So, the volume of cube will be 729cm³
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