Question

a car wheel takes 1000 revolutions to move a distance of 1.32 km find the radius of wheel​

Answer 1

Answer:

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Step-by-step explanation:

As per the qus,

1000 * 2 π r = 132000 cm

        (1000 times the circumference of the circle is 1320m)

   2 π r = 132

    r = 66 * 7/22

      = 3*2

      = 6cm

Answer 2

The Radius of the Wheel is 2.07 meters.

Step-by-step explanation:

• We have the total distance travelled = 1.32 km

       We can convert it in to meters as:

        $1.32 \textrm{Km} = 1.32 \times 1000 = 1320 \textrm{meters}$

• We have the number of revolutions = 1000

        $\textrm{we know that circumference of the circle/wheel} = 2\pi R$

      The total distance travelled by wheel in one revolution is equal to  

      circumference, so that we can calculate the total distance travelled in  

      1000 revolution as:

      $1000 \times 2\pi \times R = 1320 \\\Rightarrow \text{Radius} (R) = \dfrac{1320}{1000 \times 2\pi}\\R = 2.07 \ \text{meters}$

So the Radius of the wheel is 2.07 meters.