Q5
In a sand casting of a rectangular slab, the thickness of the solidified layer after 2 minutes is known to be 3 cm. Based on Chvorinov's rule, the solidified thickness (in cm) after 4 minutes is
A.
1.8
B.
4.3
C.
6.8
AnswerD.
9.2
Answer: Option C
Solution
Answer: Option C
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