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Part1) A car wheel has a diameter of 40cm.
a) How far (rounded to a tenth of unit) does the car wheel travel in 1 rotation?
b)10 rotations?
c) Write an equation relating the distance the car travels in centimeters, (d), to the number of wheel rotations, (x)
d) How many rotations does the car wheel make when the car travels 1 kilometer? Explain or show your reasoning.​

Sagot :

Answer:

Step-by-step explanation:

Circumference is πD

a) 40π cm ≈ 125.7 cm = 1.257 m

b) 10(40π) = 1256.6 cm = 12.57 m

c) d = xdπ

d) x = 1000 m / 0.4π m/rev = 795.8 rev

   

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