A cubical box is to be constructed with iron sheets 1 mm in thickness. – McqOptions

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1.	A cubical box is to be constructed with iron sheets 1 mm in thickness. What can be the minimum value of the external edge so that the cube does not sink in water? \[[{{\delta }_{iron}}=8000kg/{{m}^{3}},{{\delta }_{water}}=1000kg/{{m}^{3}}]\]
A.	4.8cm
B.	5.8cm
C.	6.9 on
D.	7.3cm
Answer» B. 5.8cm

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