Question

Total surface area of a cube is 864 sq.cm. Find its volume.

Answer 1

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Total surface area=864


6a^2=864

a^2=144

a=√144

a=12

now,


volume = a×a×a

=12×12×12

=1728cm^3

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#BeBrainly

Answer 2

Here is your answer dear⬆️


Let the side of a cube = a cm

Given that, TSA of a cube = 864 cm²

6a² = 864

a² = $\frac{864}{6}$

a² = 144

a = $\sqrt{144}$

a = 12 cm²


Volume of the cube = a³

V = a³

V = (12)³

V = 1728 cm³



Hope it helps☺

$\mathfrack{Be \: Brainly}$✌