the wheel of car is making 5 Revolution per second if the diameter of the wheel is 84 cm find its speed in kilometre per hour give your answer to the nearest kilometre
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The answer to your question is:-
Diameter of the wheel = 84cm
Radius of the wheel =Diameter/2
=84/2
=42 cm
Circumference of the wheel= 2*pi*r
=2*22/7*42
=264cm
=2.64m
2.64m is the distance covered by the wheel in one revolution
Distance covered by the wheel in 5 revolutions= 2.64*5
=13.2m
The wheel covers a distance of 13.2 m in one second.
1 hour=60*60
=3600s
Distance covered by the in 3600s=13.2*3600
=47420 km/hr
The speed of the cart is 47240 km/hr
HOPE THIS HELPS YOU!!! ❤❤❤❤
The answer to your question is:-
Diameter of the wheel = 84cm
Radius of the wheel =Diameter/2
=84/2
=42 cm
Circumference of the wheel= 2*pi*r
=2*22/7*42
=264cm
=2.64m
2.64m is the distance covered by the wheel in one revolution
Distance covered by the wheel in 5 revolutions= 2.64*5
=13.2m
The wheel covers a distance of 13.2 m in one second.
1 hour=60*60
=3600s
Distance covered by the in 3600s=13.2*3600
=47420 km/hr
The speed of the cart is 47240 km/hr
HOPE THIS HELPS YOU!!! ❤❤❤❤
ash9796:
yes
1320*3600 CM =47.52 km
please explain
we are finding distance and we all know that distance equal to speed into time so speed = distance upon time then how can you write that 3602* 1320 equals 47.5 km per hour
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