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The Volume of a Cube is 729 Cm3. Find Its Surface Area. - Mathematics

Sum

The volume of a cube is 729 cm3. Find its surface area.

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Solution

Let the edge of the cube be a.

AS, 

Volume of the cube = 729 cm

`rArr a^3 = 729`

`rArr a = root(3)(729)`

⇒ a = 9 cm

Now,

Surface area of the cube = 6a2

= 6 × 6 × 9

= 486 cm2

so, the surface area of the cube is 486 cm2 .

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APPEARS IN

RS Aggarwal Secondary School Class 10 Maths
Chapter 19 Volume and Surface Area of Solids
Exercise | Q 2 | Page 914
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