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
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
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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
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