The wheel of a motor car makes 1000 revolutions in moving 440 m. The d

1.	The wheel of a motor car makes 1000 revolutions in moving 440 m. The diameter (in meter) of the wheel is1. 0.342. 0.143. 0.444. 0.24
Answer» Correct Answer - Option 2 : 0.14 Given: The number of revolutions = 1000 And total cover distance = 440 m. Formula used: One revolution = total distance covered by wheel/the number of revolutions Circumference of wheel = 2 × π × r = distance covered by a wheel in one revolution Diameter of a wheel = 2 × r Calculation: Distance in one revolution = 440/1000 ⇒ Distance in one revolution = 0.44 m ⇒ 2 × π × r = 0.44 ⇒ r = 0.44/(2 × π), where π = 22/7 ⇒ r = 0.07 m Diameter = 2 × 0.07 ⇒ Diameter = 0.14 m ∴ The diameter (in meter) of the wheel is 0.14 m.

The wheel of a motor car makes 1000 revolutions in moving 440 m. The diameter (in meter) of the wheel is1. 0.342. 0.143. 0.444. 0.24

Answer» Correct Answer - Option 2 : 0.14

Given:

The number of revolutions = 1000

And total cover distance = 440 m.

Formula used:

One revolution = total distance covered by wheel/the number of revolutions

Circumference of wheel = 2 × π × r = distance covered by a wheel in one revolution

Diameter of a wheel = 2 × r

Calculation:

Distance in one revolution = 440/1000

⇒ Distance in one revolution = 0.44 m

⇒ 2 × π × r = 0.44

⇒ r = 0.44/(2 × π), where π = 22/7

⇒ r = 0.07 m

Diameter = 2 × 0.07

⇒ Diameter = 0.14 m

∴ The diameter (in meter) of the wheel is 0.14 m.

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