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earnstyle [38]
2 years ago
10

If the speed of a car is 20 m s^-1 then what is its speed in km h^-1 ?#no spam​

Mathematics
2 answers:
ivanzaharov [21]2 years ago
8 0
  • Speed in m/s=20m/s

We have to convert it to km/h

\\ \sf\longmapsto 20\times \dfrac{3600}{1000}

\\ \sf\longmapsto 20\times \dfrac{18}{5}

\\ \sf\longmapsto 4times 18

\\ \sf\longmapsto 72km/h

Romashka-Z-Leto [24]2 years ago
4 0

Answer:

hope it helps you

mark as brainlist:))

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Hope it helps....!!!!!

Step-by-step explanation:

AB = c = 38

BC = a = 29

AC = b

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Cosine rule: c^2 = a^2 * b^2 -2ab * cos C

38^2 = 29^2 * b^2 - (2* 29) * b * (cos 38)

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