Math, asked by fahadqureshi931182, 2 days ago

The diameter of a car wheel is 42 cm. The number of complete revolutions it will make in moving 132 km is (a) 104 (c) 106 . 105 (d). 103​

Answers

Answered by Nithyar6
9

Answer:

The correct answer is: No.of revolutions car wheel make in moving 132km is:

10^5

Step-by-step explanation:

Given:

Diameter of car wheel=42cm

Radius of car wheel r = diameter/2

=42/2cm=21cm

Now, Circumference of car wheel=2πr

=2*3.14*21

=132cm

No. of revolutions in 132cm=Distance/circumference

Convert 132cm into km.

132cm=13200000km

As 1cm=100000km

So, no.of revolutions is 13200000/132

i.e.100000

i.e.10^5.

Circumference is the total path length covered.

Diameter is twice the radius.So radius can be calculated from diameter by dividing it by 2.

For more references:

https://brainly.in/question/58544?utm_source=android&utm_medium=share&utm_campaign=question

https://brainly.in/question/58752?utm_source=android&utm_medium=share&utm_campaign=question

#SPJ3

Answered by guruu99
4

Answer:

The number of complete revolutions car wheel make in moving 132km is:

10^5.

Step-by-step explanation:

Given:

Diameter of car wheel=42cm

Radius of car wheel r = diameter/2

=42/2cm=21cm

Now, Circumference of car wheel=2πr

=2*3.14*21

=132cm

No. of revolutions in 132cm= Distance/circumference

Convert 132km into cm.

132km=13200000cm

As 1km=100000cm

So, no.of revolutions is 13200000/132

i.e.100000

i.e.10^5.

Circumference is the total path length covered.

Diameter is twice the radius. So, radius can be calculated from diameter by dividing it by 2.

To know more about radius: brainly.in/question/58544

To know more about diameter: brainly.in/question/58752

#SPJ3

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