If a wheel having diameter 56 cm makes 1000 revolution to cover a cert

1.	If a wheel having diameter 56 cm makes 1000 revolution to cover a certain distance. What is the distance covered by the wheel (in km)?1. 2.8 km2. 1.76 km3. 1.89 km4. 2.52 km
Answer» Correct Answer - Option 2 : 1.76 km Given: Diameter = 56 cm Number of revolution = 1000 Concept used: Total distance = Number of revolution × Circumference Circumference of circle = 2πr Calculation: Diameter = 56 cm Radius = 56/2 ⇒ Radius = 28 cm Circumference of circle = 2πr ⇒ Circumference = 2 × 22/7 × 28 ⇒ Circumference = 176 cm Total distance = Number of revolution × Circumference ⇒ Total distance = 1000 × 176 ⇒ Total distance = 176000 cm ⇒ Total distance = 176000 × 1/100000 km ⇒ Total distance = 1.76 km ∴ The distance covered by the wheel is 1.76 km.

If a wheel having diameter 56 cm makes 1000 revolution to cover a certain distance. What is the distance covered by the wheel (in km)?1. 2.8 km2. 1.76 km3. 1.89 km4. 2.52 km

Answer» Correct Answer - Option 2 : 1.76 km

Given:

Diameter = 56 cm

Number of revolution = 1000

Concept used:

Total distance = Number of revolution × Circumference

Circumference of circle = 2πr

Calculation:

Diameter = 56 cm

Radius = 56/2

⇒ Radius = 28 cm

Circumference of circle = 2πr

⇒ Circumference = 2 × 22/7 × 28

⇒ Circumference = 176 cm

Total distance = Number of revolution × Circumference

⇒ Total distance = 1000 × 176

⇒ Total distance = 176000 cm

⇒ Total distance = 176000 × 1/100000 km

⇒ Total distance = 1.76 km

∴ The distance covered by the wheel is 1.76 km.

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