Question

A bus cover 2.2 km distance in 500 rotations of its Tyre, then what is the diameter of it tyre​

Answer 1

Answer:

diameter=7/5m

Step-by-step explanation:

since tyre rotates 500 times it's circumference to cover 2.2km.

therefore,

500xπd=2.2km

500xπd=2200m

πd=2200/500m

22/7xd=2.2m. (taking π=22/7)

d=2.2x7/22m

d=7/5m

Answer 2

Answer:

Length of distance covered = 2.2 km

                                                = 2200 m

No. of revolutions = 500

Circumference = 2200/500

                         = 22/5

Circumference = 2 * pi * r

              22/5   = 2 * 22/7 * r

               22/5 = 44/7r

               22/5 * 7/44 = r

                0.7 cm = r

Therefore diameter  = 0.7 * 2 = 1.4 cm