Question

13, The diameter of the wheel of a truck is 140 cm. If
PERIMETER AND
the wheel makes 50 revolutions per minute, find
the speed of truck in km/hr.​

Answer 1

Answer:

n=250

Step-by-step explanation:

Circumference x no. Of revolutions = total distance

2x22/7x70 x n = 66x1000x100(in cm)/60

nx440=110000

n=110000/440

n=11000/44

n=250

Answer 2

Answer:

Speed of the bus = 66 km/hr

Distance covered by the wheel in one minute =

66×1000×100 / 60 = 110000 cm

Circumference of the wheel = 2× 22 / 7 × 70 = 440cm

Therefore, distance covered by the wheel in one revolution = 440 cm

Hence, number of revolutions in one minute =

110000 / 440 = 250

Step-by-step explanation:

Please mark as brainliest answer and follow me please and thank me please Because I am a very good boy