Question

10). A bicycle wheel whose diameter is 77cm makes 50 revolutions
in 20 seconds. Find the speed in km/h​

Answer 1

Answer:

HERE IS YOUR ANSWER ...

Step-by-step explanation:

DIAMETER = 77 cm

= 0.00077 km

TIME = 20s

= 0.00555 h

Circumference= 22/7 x 77/100000

= 0.00242 Km

50 revolution= 0.00242 x 50

= 0.121

Speed = distance/time

= 0.121/0.00555

= 12100/555

= 21.8 km/h

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