A) \[AB\times DL=BC\times DM\]
B) \[18\times DL=12\times 10\]
C) \[DL=\frac{12\times 10}{18}=\frac{20}{3}=6\frac{2}{3}cm,\]
D) \[=2\pi \times 42=84\pi cm.\]
Correct Answer: B
Solution :
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