Question

12. How many times a wheel of radius 28 cm must rotate to go 352 m? (Taken = 3 π= 22\7
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Answer 1

Answer:

only 2 times

Step-by-step explanation:

as one rotation gives it to move along 2πr metre

now it will be n rotations

according to the question

n*2*22*28/7=352

we get n=2

hope it is helpful

Answer 2

Answer:

200 times

Step-by-step explanation:

The wheel goes a distance equal to the circumference of the wheel in one rotation= 2πr

= 2× 22/7 × 28 cm

= 2× 22 × 4

= 44 × 4

= 176

352 m = 352 × 100 cm

number of rotation of the wheel =

352 × 100 cm / 176 cm

= 35200/ 176

= 200

200 times.... answer