Question

how many times a wheel of radius 42 cm must rotate to go to 1320 cm​

Answer 1

Answer:

5

Step-by-step explanation:

r = 42 cm

$Circumference = 2\pi r$

Circumference = 2 * 22/7 * 42

Circumference = 2*22*6

Circumference = 264 cm

Rotation = Distance / Circumference

Rotation = 1320 / 264

Rotation = 5

Answer 2

Answer:

5 times

Step-by-step explanation:

To find this we find circumference of the wheel

Circumference=2$\pi$r

=> 2*22/7*42

=>2*22*6  [7 and 42 get divided]

=>44*6

=>264

Now, circumference is 264 cm

To find number of rotations, we divide 264 by 1320

=>1320/264

=>5

Therefore, the wheel spins 5 times to cover 1320 cm

Hope it will helps

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