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(4 akar 2) / sin 45° = AC / sin 30°
(4 akar 2)× sin 30° = AC × sin 45°
(4 akar 2)× 1/2 = AC × 1/2 akar 2
2 akar 2 = 1/2 akar 2 × AC
AC = 2 akar 2 / 1/2 akar 2
AC = 4 cm (C)

<R = 180° - < P - < Q
= 180° - 30° - 105°
= 45°
RQ / sin 30° = (464 akar 2) / sin 45°
RQ / 1/2 = (464 akar 2) / 1/2 akar 2
2× RQ = 928
RQ = 928 / 2
= 464 m (B)