alleryবায়ুতে শব্দের বেগ 340 m/s। km/h এককে এটি কত?
A1124 km/h
B1122 km/h
C1200 km/h
D1224 km/h
Answer & Solution
Correct answer: D. 1224 km/h
340 x 3.6 = 1224 km/h।
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