Question

The radius of a circular wheel is 1.75 m.How many revolutions will it make in travelling 11 km?

Answer 1

Answer:

$Number \: revolutions = 1000$

Step-by-step explanation:

$Radius \: of \: a \: circular\\wheel (r) = 1.75 \:m$

$Distance \: traveling \: in \\1 \: revolution(C) = circumference \: of \: the \: wheel\\ =2\pi r\\= 2 \times \frac{22}{7} \times 1.75 \:m \\=44 \times 0.25\\=11\:m$

$Number \: revolutions \\made \: by \: the \: wheel \\in \: traveling \: 11\:km\\ = \frac{11\:km}{C}\\=\frac{11000\:m }{11\:m }\\=1000$

Therefore,

$Number \: revolutions = 1000$

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Answer 2

Answer:

The circular wheel makes 1000 revolutions.

Step-by-step explanation:

Given: Radius of circular wheel r =1.75m

To find: The total number of revolution will it make in travelling 11km

We have,

Perimeter of the circle=2πr

Substituting the values we get

=2 x 22/7 x 1.74

Dividing 1.74/7  

We get 0.25

Then multiply 2 x 22 x 0.25

We get,

=11m

So for 11km, revolutions

=11 x 1000/11

By multiplying 11x1000

=11000

Then divide 11000 by 11

=11000/11

We get

=1000

Hence the circular wheel will make a 1000 revolutions in travelling 11km.