Question

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

Answer 1

radius = 42 cm

circumference = 2 x pi x r = 2 x 22/7 x 42 = 2 x 22 x 6 = 264 cm

So, distance covered by the wheel in one rotation = 264 cm

     rotations required to cover 1320 cm by the wheel = 1320/264

                                                                                         = 5 rotations

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Answer 2

Answer:

you can try yourself so please try it and I believe you can just do it.