Question

Lin’s bike travels 100 meters when her wheels rotate 55 times. What is the circumference of her wheels?

Answer 1

Answer:

Using formula to calculate the circumference of wheel:

$C = \frac{D}{n}$

where

D is the distance bike travel

n is the number of times rotation

C is the circumference of the wheel

As per the statement:

Lin’s bike travels 100 meters when her wheels rotate 55 times.

here, n = 55 rotation and D = 100 meter.

then by definition:

$C = \frac{100}{55}=\frac{20}{11}$ meter

$C = 1\frac{9}{11} meter$

Therefore, the circumference of her wheel is, $1\frac{9}{11} meter$

Answer 2

The circumference of her wheel is $1\dfrac{9}{11}\;meter$

The relation beteween circumferece and Number of times rotation is

$C=\dfrac{D}{N}$

where

$C=Circumference$

$D=Distance$

$N= Number\; of\; time\; rotation$

the value of $D=100$

$N=55$

Hence Put the value

$C=\dfrac{100}{55}$

$C=\dfrac{20}{11}$

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