Question

The volume of a cube is 729 cm 3 . Find its total surface area.

Answer 1

Hi ,

Let side of the cube = a cm

volume of the cube ( v ) = 729 cm³

a³ = 729 cm³

a³ = ( 9 cm )³

a = 9 cm

Total surface area of the cube = 6a²

A = 6 × 9²

A = 6 × 81

A = 486 cm²

I hope this helps you.

:)

Answer 2

Hey


Volume = 729 cm^3

Since its a cube, we can find its sides

Volume = a^3 = 729

a = cube root of 729 = 9 cm.


Total surface area = ?

= 6 × a^2

= 6 × (9)^2

= 6 × 81

= 486  sq.cm


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Hope this helps!