The diameter of a wheel of a car is 84 cm. How many revolutions will it make to travel 132 km?
ankitkumar30:
help me
Answers
Answered by
14
wait a min ,
area of circle = πr^2
diameter=r/2 = 84/2 = 42
Area of the wheel =22/7×42×42
=5544m²
Revolutions will be covered in 132km = 5544÷132= 42m
area of circle = πr^2
diameter=r/2 = 84/2 = 42
Area of the wheel =22/7×42×42
=5544m²
Revolutions will be covered in 132km = 5544÷132= 42m
Answered by
12
Diameter of wheel = 84 cm
Radius = 42 cm
Circumference of wheel = 2 × 22/7 × 42
= 44 × 6
= 264 cm
= 2.64 m
Distance to be travelled = 132 km= 132000 m
Number of revolution = Total distance / Circumference of wheel
= 132000 / 2.64
= 13200000 / 264
= 100000/ 2
= 50000
Radius = 42 cm
Circumference of wheel = 2 × 22/7 × 42
= 44 × 6
= 264 cm
= 2.64 m
Distance to be travelled = 132 km= 132000 m
Number of revolution = Total distance / Circumference of wheel
= 132000 / 2.64
= 13200000 / 264
= 100000/ 2
= 50000
Similar questions