An aircraft executes a horizontal loop with a speed of 150 \( \mathrm{m} / \mathrm{s} \) with it...

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An aircraft executes a horizontal loop with a speed of 150 \( \mathrm{m} / \mathrm{s} \) with its wings banked at an angle of \( 12^{\circ} \). The radius of the loop is \( \left(g=10 \mathrm{~m} / \mathrm{s}^{2}, \tan 12^{\circ}=0.2126\right) \quad \) [Pb. PET 2001]
(a) \( 10.6 \mathrm{~km} \)
(b) \( 9.6 \mathrm{~km} \)
(c) \( 7.4 \mathrm{~km} \)
(d) \( 5.8 \mathrm{~km} \)
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