Question

1) Sound travels at a speed of 1188 km in one hour. How many meters will it travel in one second?
2) A 120 m long train is running at a speed of 45 km/hr. If it takes 24 seconds to cross the platform, find the length of the platform
3) A square field has an area of 8.41 acres. Find the cost of putting the fence around it at the rate of $8 per meter. (Hint: 1 Acre = 100 m²)
plz answer them quickly i will follow whoever does

Answer 1

1 km/h = 18/5 m/s

1188 km/h = 18/5 x 1188 m/s = 4276.8 m/s =

Therefore, it will travel 4376.8 m in 1 second.