Question

Tyre of bus is having diameter of 0.7 m. How many revolutions will the tyre take to cover the distance of 22 km between the two villages ?​

Answer 1

Answer:

It will take 10,000 revolutions for a tyre to cover the distance of 22 km between the two villages.

Step-by-step explanation:

Given:

• Tyre of bus is having diameter of 0.7 m.

To find:

• How many revolutions will the tyre take to cover the distance of 22 km between the two villages ?

Solution:

Diameter of tyre of bus = 0.7 m

♦ Radius of tyre of bus = Diameter/2

• Radius of tyre of bus = 0.7/2
• Radius of tyre of bus = 7/20
• Radius of tyre of bus = 0.35 m

♦ Circumference of a circle = 2πr

Where,

Value of π = 22/7

r is the radius of a circle ( Here, radius of tyre of bus which is in shape of circle. )

Putting the values in the formula, we have:

• Circumference of a circle = 2 × 22/7 × 0.35
• Circumference of a circle = 2 × 22/7 × 35/100
• Circumference of a circle = 2 × 22 × 5/100
• Circumference of a circle = 220/100
• Circumference of a circle = 2.20
• Circumference of a circle = 2.2 m = (2.2/1000) km

Finally,

• Distance covered in one revolution = (2.2/1000) km
• Revolutions taken to cover 22 km distance = 22/2.2/1000
• Revolutions taken to cover 22 km distance = 22/2.2/1000
• Revolutions taken to cover 22 km distance = 22 × 1000/2.2
• Revolutions taken to cover 22 km distance = 22 × 10000/22
• Revolutions taken to cover 22 km distance = 10000

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