Question

HumanIntelligence
please solve this question.. ​

Answer 1

So, in 60 minutes the train will travel 990 m or about 59400 m.

Answer 2

Answer:

Step-by-step explanation: given radius of wheel= R= 2.1 m

                                   number of revolution in one minute = 75

                                        number of revolution in one hour= 75×60

                                      ∴ number of revolution in one hour= 45000

                distance covered in one revolution= circumference of wheel

          distance covered in one revolution= 2πr[where R= radius of  wheel]      

           distance covered in one revolution = 2×22/7 × 2.1 [ put π= 22/7]

                                                                        =  13.2 m

      so distance covered in 4500 revolution =4500 ×13.2

                                                                         59.4km