The radius of circular wheel is 21 m how many revolution need to make

1.	The radius of circular wheel is 21 m how many revolution need to make by the wheel to cover the distance of 1.980 km?1. 122. 153. 184. 20
Answer» Correct Answer - Option 2 : 15 Given: Radius of circular wheel is 21 m and it need to cover the distance of 1.980 km Formula used: Circumference of circle = 2 π r Number of revolution = Total distance covered/circumference of wheel Calculation: When radius of circle is 21 m ∴ Circumference of circle = 2 π × 21 = 132 m Now, number of revolution required to cover 1.980 km ∴ Number of revolution = 1980/132 = 15 Hence, option (2) is correct

The radius of circular wheel is 21 m how many revolution need to make by the wheel to cover the distance of 1.980 km?1. 122. 153. 184. 20

Answer» Correct Answer - Option 2 : 15

Given:

Radius of circular wheel is 21 m and it need to cover the distance of 1.980 km

Formula used:

Circumference of circle = 2 π r

Number of revolution = Total distance covered/circumference of wheel

Calculation:

When radius of circle is 21 m

∴ Circumference of circle = 2 π × 21 = 132 m

Now, number of revolution required to cover 1.980 km

∴ Number of revolution = 1980/132 = 15

Hence, option (2) is correct

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The radius of circular wheel is 21 m how many revolution need to make by the wheel to cover the distance of 1.980 km?1. 122. 153. 184. 20

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