Question

How many times a wheel of radius 28cm. must rotate to go 352 cm ? [Take pie =
22/7]​

Answer 1

Answer:

2 times

Step-by-step explanation:

Perimeter of the wheel = $2*\pi *r$

= 2* 22/7 * 28

= 2 *22 * 4

= 176 cm

so the wheel covers 176 cm per rotation

Let number of rotation = n

therefore,

n * 176 = 352

n = $\frac{352}{176}$

n = 2

therefore the wheel must rotate 2 times to cover a distance of 352 cm

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Answer 2

Answer:

》So here, radius (R) = 28cm

》circumference (C) => 2πR = 2 x (22/7) x 28 = 176 cm.

》The required distance (D) is 352 m = 352 x 100 cm

since [1m = 100cm].

Thus, the number of times the wheel must rotate

》 Total Distance/Circumference

》 D/C = 352 x 100/176 = 2 x 100 = 200Times

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