Answer:
211 meters
Step-by-step explanation:
Let A represents the Admiral, B represents the Barstow and C represents the Cauldrew.
According to the question,
AB = 402,
∠B = 70°,
∠A = 31°,
∵ ∠B + ∠A + ∠C = 180° ⇒ 70° + 31° + ∠C = 180° ⇒ ∠C = 180° - 101° = 79°
By the law of sine,
By substituting the values,
By cross multiplication,
Hence, the distance between the Barstow and the Cauldrew is 211 meters ( approx )
Second option is correct.