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For a tire whose diameter is 22.5 inches and is traveling at 66.1 miles per hour, how many revolutions per min?

For a tire whose diameter is 22.5 inches and is traveling at 66.1 miles per hour, how many revolutions does the tire make per minute?

6 Answers

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  • 9 years ago
    Favorite Answer

    66.1 mph

    66.1/60 = 1.1016666 miles per minute = 69801.595 inches per minute

    circumference = 3.142 X 22.5 = 70.695 "

    no of revolutions = 69801.595 /70.695 = 987.36254 revolutions

    ANSWER 987

  • 9 years ago

    circumference = pi*d

    22/7*22.5 = 70.65 inches

    66.1 miles per hour = 66360 inches an hour

    66360/60 =1106 inches in a minute

    so the number of revolutions per minute = 1106/70.65 = 15.65

    close to 15 and a half revolutions

  • 9 years ago

    CIRCUMFERENCE OF TIRE = 22.5 X 3.142 = 70.714 INCHES [ circumference = 2pi r]

    revolution = 66.1x1760x3x12/ 70,714 per hr = 4188096/70.714 /hr

    = 59225.8/ hr

    =59225.8./60 per minute

    =987 /min. ANSWER

    [ NOTE --- 1 mile= 1760 yards

    1 yard = 3 feet

    1 feet= 12 inches ]

  • Pranil
    Lv 7
    9 years ago

    circumference = 2πr = π d

    = 22.5 × 3.14 = 70.65 inch

    circumference = 1 revolution

    distance travelled in 1 minute = 66.1/60 = 1.102 miles per minute

    1.102 miles = 1.102 × 5280 feet = 1.102 × 5280 × 12 inch

    so revolution per minute = distance/circumference

    = 1.102 × 5280 × 12/70.65 = 987.992 ≈ 988

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  • Anonymous
    9 years ago

    does the diameter matter? if its traveling 66.1 mph wouldnt it be the same regardless?

  • 5 years ago

    How the fack might want to i understand? i wager not, they could want their passengers to all starve to demise like all reliable delivery provider. yet they ought to positioned the radio on! I <3 track! ((d[2c6b3be4d5c612986c9bf076e648992c6b3be4d5c612986c9bf076e648992c6b3be4d5c612986c9bf076e64899]b))

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