Question

3. The speed of sound at sea level at 20°C is 343 metres per second. Write the prime factorisation of 343.
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Answer 1

Step-by-step explanation:

343=7*7*7

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Answer 2

Answer:

At 20 °C , the speed of sound in air is about 343 metres per second (1,235 km/h ; 1,125 ft/s ; 767 mph ; 667 kn) or a kilometre in 2.9 s or a mile in 4.7s.

Prime factorization => 343 = 7×7×7

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