Question

if the diameter of a wheel is 4 meters how much distance will it cover in 400 revolutions​

Answer 1

Step-by-step explanation:

Diameter = 4m

Radius (r) = 4/2 m = 2m

Circumference = 2πr

= 2 × 22/7 × 2 m

= 88/7 m

= 12.5714 m

Distance travelled in 400 revolutions = 12.5714 × 400

= 5028.56 m

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Answer 2

Answer:

5.024 km or 5024 meters

Step-by-step explanation:

Diameter = 4m

Radius = 4/2 = 2 m

Perimeter = 2$\pi$ r

                = 2×22/7×2 or 2×3.14×2

               = 88/7 or 12.56 meters

distance it will cover in 1 revolution = 1 × circumference (perimeter)

                                                          =  1 × 12.56

                                                          =  12.56 meters

distance it will cover in 400 revolution = 400 × circumference (perimeter)

                                                                =  400 × 12.56

                                                                =  5024 meters

if you want the answer in "km"

⇒ 1000 meters = 1 km

⇒ 5024 meters = 5024 / 1000

                          = 5.024 km