Question

the total surface of a cube is 864sq m find its side and diagonal​

Answer 1

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Answer:

Side: 12cm

Diagonal: 16.968cm

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Step-by-Step Explanation:

TSA of a cube = 6a²

So,

6a² = 864

a² = $\frac{864}{6}$

a = 12cm

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Diagonal of square = $\sqrt{2}a$  

a = 12

Diagonal = 1.414 x 12

Diagonal = 16.968cm

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