nilai 2¼π, rad= (tolong pakai jln kak) a.415° b.405° c.395° d.385° e.375°

[tex] = 2 \frac{1}{4} \pi \times \frac{180}{\pi} \\ = \frac{9}{4} \pi \times \frac{180}{\pi} \\ = \frac{9 \times 180}{4} \\ = 9 \times 45 \\ = 405[/tex]

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