Answered

If a tire rotates at 400 revolutions per minute when the car is traveling 72km/h, what is the circumference of the tire?

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Shinalcantaraviz

Answer:

Ans: C = 3m

Step-by-step explanation:

Formula: distance = Circumference x revolution

Convert

[tex]400 \frac{rev}{min} ( \frac{60min}{1hr} ) = 24000 \frac{rev}{hr} [/tex]

equate 24,000 rev/hr to the speed.

[tex]24000 \frac{rev}{hr} = 72 \frac{km}{hr} \\ 24000rev = 72km[/tex]

Substitute to the formula

d = C x rev

72km = C(24000)

72km(1000m/km) = C(24000)

72000m/24000 = C

C = 3m

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