Question

how many times A wheel of radius 28cm must rotate to go 352 take r equals to 22 / 7

Answer 1

Given radius =28 cm
area of the wheel(as it is a circle)=2πr
                                                     =2×(22÷7)×28=176cm
as it must rotate 352m which is given meter's we need to convert it in cm
                                      35200

hence no of time it rotates=35200÷176=200times

Answer 2

Answer:

The wheel goes a distance equal to the circumstances of the wheel in one rotation = 2π r

2× 22/7 ×28 cm

2×22×4

44×4 = 176

352m = 352 × 100 cm

number of rotations of the wheel =

352×100cm/176cm

35200/176

200 times ans

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