Question

Find the edge of a cube whose surface area is 432 m².

Answer 1

Concept : surface area of a cube : Since all the six faces of a cube are squares of the same size.  

Given : Surface area of cube is 432 m².

Let the edge of the cube be 'a' m.

Surface area of cube = 6a²

6a² = 432

a² = 432/6

a² = 72

a = √72

a = √(36 × 2)

a = 6√2  m

Hence,  the edge of a cube is 6√2 m.

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Find the edge of a cube whose surface area is 432 m².

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Answer 2

Step-by-step explanation:

_______❤HOLA❤______

SURFACE AREA OF CUBE = 432 Sq, m

Let the edge of cube a m.

now, surface area of cube =

$6 {a}^{2}$

6a2 = 432

a2 = 72

a = 6 root 2

hence edge of cube 6root2