What is the distance covered (In km) by a circular wheel of radius 3.5

1.	What is the distance covered (In km) by a circular wheel of radius 3.5 m in 50 revolutions?1. 1.1 km2. 1.2 km3. 2.2 km4. 2.1 km
Answer» Correct Answer - Option 1 : 1.1 km Given: Radius = 3.5 m Number of revolution = 50 Formula used: Circumference of circle = 2 π r Number of revolution = Total distance covered/circumference of the wheel Concept used: The distance covered in one revolution is equal to the circumference of the circle Calculation: Circumference of circle = 2 π × 3.5 ⇒ 2 × (22/7) × 3.5 ⇒ 22 m Now, Total distance covered in 50 revolutions = 50 × 22 = 1100 m = 1.1 km ∴ The distance covered by the circular wheel is 1.1 km

What is the distance covered (In km) by a circular wheel of radius 3.5 m in 50 revolutions?1. 1.1 km2. 1.2 km3. 2.2 km4. 2.1 km

Answer» Correct Answer - Option 1 : 1.1 km

Given:

Radius = 3.5 m

Number of revolution = 50

Formula used:

Circumference of circle = 2 π r

Number of revolution = Total distance covered/circumference of the wheel

Concept used:

The distance covered in one revolution is equal to the circumference of the circle

Calculation:

Circumference of circle = 2 π × 3.5

⇒ 2 × (22/7) × 3.5

⇒ 22 m

Now, Total distance covered in 50 revolutions = 50 × 22 = 1100 m = 1.1 km

∴ The distance covered by the circular wheel is 1.1 km

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