Answer:
Circumference = Diameter × π
Circumference = 35 cm × 3.14
Circumference = 109.9 cm
The number of revolutions in 1 minute is given as 100, so the distance covered in 1 minute can be calculated as:
Distance in 1 minute = Circumference × Revolutions
Distance in 1 minute = 109.9 cm × 100
Distance in 1 minute = 10990 cm
To find the distance covered in half an hour, we need to multiply the distance in 1 minute by 30, since there are 30 minutes in half an hour:
Distance in half an hour = Distance in 1 minute × 30
Distance in half an hour = 10990 cm × 30
Distance in half an hour = 329700 cm
To express the answer in km, we need to divide the distance in cm by 100000, since there are 100000 cm in a km:
Distance in km = Distance in cm / 100000
Distance in km = 329700 cm / 100000
Distance in km = 3.297 km
Therefore the distance covered by the wheel in half an hour is 3.297 km.