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Find the distance between two towns P(45°N, 30°W) an...

Find the distance between two towns P(45°N, 30°W) and Q(15°S, 30°W) if the radius of the earth is 7000km. [π=227]

A.

11003km

B.

22003km

C.

220003km

D.

11003km

Correct answer is C

Angular difference = 45° + 15° = 60°.

D = \frac{60°}{360°} \times 2 \times \frac{22}{7} \times 7000

= \frac{22000}{3} km