a bicycle wheel makes 5000 revolution in moving 11 km then find the diameter of the wheel.
Answers
Answered by
975
5000 revolutions=11000 m
1 revolution=11000/5000 m
circumference=11/5 m
2πr=11/5
πd=11/5
22/7×d=11/5
d=11×7/(5×22)
d=11×7/110
d=7/10 m
d=0.7 m
d=0.7×100 cm
d=70 cm
1 revolution=11000/5000 m
circumference=11/5 m
2πr=11/5
πd=11/5
22/7×d=11/5
d=11×7/(5×22)
d=11×7/110
d=7/10 m
d=0.7 m
d=0.7×100 cm
d=70 cm
Answered by
236
Solution :
Let the radius of bicycle be 'x' and Distance covered by Bicycle.
Distance covered by Bicycle in 1 Revolution = Distance covered / Total Number of revolution
✒ Distance covered by Bicycle in 1 Revolution = 11/ 5000 km
= 11/5000 × 1000 × 100 cm
= 11/5 × 100 cm
= 11× 20 cm
= 22,0 cm
✍We have Circumference of Circle = 220 cm
✒ Circumference of Circle = πD
✒ Circumference of Circle = 22/7 × D
✒ 22,0 = 22/7 × D
✒ 22,0 × 7 = 22D
✒ 1540 = 22D
✒ Diameter = 70 cm
Therefore, Diameter is 70 cm.
Let the radius of bicycle be 'x' and Distance covered by Bicycle.
Distance covered by Bicycle in 1 Revolution = Distance covered / Total Number of revolution
✒ Distance covered by Bicycle in 1 Revolution = 11/ 5000 km
= 11/5000 × 1000 × 100 cm
= 11/5 × 100 cm
= 11× 20 cm
= 22,0 cm
✍We have Circumference of Circle = 220 cm
✒ Circumference of Circle = πD
✒ Circumference of Circle = 22/7 × D
✒ 22,0 = 22/7 × D
✒ 22,0 × 7 = 22D
✒ 1540 = 22D
✒ Diameter = 70 cm
Therefore, Diameter is 70 cm.
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