Question

How many times a wheel of a radius 28 cm must rotate to go 352 m if Pie is

22/7.also find the perimeter of this wheel ?​

Answer 1

Answer: The circumference of a wheel of 28 cm radius = 2(pi)r = 2*22*28/7 = 176 cm or 1.76 m. So in order to cover a distance of 352 m the wheel has to rotate 352/1.76 = 200 times.

Step-by-step explanation:

Answer 2

According to the question:

• As per given in the question,Radius of wheel is 28cm and it must rotate to go 352m if (pi = 22/7).We are said to find how many times it will rotate.

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Given:

• Radius = 28cm
• Distance covered = 352m

To Find:

• time taken to complete 352m = ?
• Circumference of the circle = ?

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Therefore,

Using Formula:

$\: \: \sf \: circumference \: of \: the \: circle = 2 \pi \: r$

Now substitute the values

$\: \: \sf \: circumference = 2 \times \frac{22}{7} \times 28 = 176cm \:$

Now we have to convert cm into m

As we know,

1m = 100 cm

176cm = 176/100 = 1.76m

$\: \: \sf \therefore\:to \: cover \: a \: distance \:of \: 352m \: the \: wheel \: has \: to \: rotate \: = \frac{352}{1.76} \\ \\ \: \: \sf \: = 200 \: times$

Hence, they will cover a distance of 352m in 200 times rotation.

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