Question

How many times a wheel of radius 28cm must rotate to go 352meter

Answer 1

First let us find the circumference

2πr = 2 X 22/7 X 28

Circumference is 176cm

Now convert 352m to cm

It becomes 35200cm

NO OF TIMES THE WHEEL SHOULD ROTATE IS = 35200/176

= 200times

Answer : therefore the wheel should rotate 200 times to go 352m.

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Answer 2

Given:-

• Radius = 28cm
• To cover the Along Path = 352m

To Find:-

• No. Of times to rotate

Solution:-

Path to be Covered = 352m

To convert To [cm].

1 m = 100 cm

= 352 × 100

= 35200 cm

Radius Given, = 28cm .

To find The Circumference (Formula) = 2πr

Here , We will take π as $\sf\dfrac{22}{7}$

= $2 × \dfrac{22}{\cancel{7_1}}×{\cancel{ 28}}^{4}$

= 176cm

Now, We will divide both Values (35200 cm & The Circumference [176 cm]) To find the Answer!

No.of times Rotate = $\dfrac{35200}{176}$ = 200

Therefore, It will take 200 times To rotate to go 352 m