Length of a seconds clock is 4cm then the sppeed of second hand clock is
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This sounds like a question for a school class. Circumference of a circle is 2 Pi r
r = 8cm
2 x 8 x 3.14 = 50.24 cm
How long does it take for one complete revolution ? It’s a second hand. It take 1 minute.
So, the tip of the second hand is traveling at 50.24 cm per minute.
How many centimeters in a kilometer ? 100,000
To convert that to kph, multiply by 60 minutes then divide by 100,000
50.24 x 60 = 3014.4 cm per hour. divided by 100,000 0.03 kph
Now, study so this makes sense. It is quite elementary to understanding math.
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