Amountain bike tire completes 20 revolutions and travels 136 feet. rounded to the nearest inch, what is the diameter of the bike’s tire? use 3.14

diameter of bike's tire is 25.9872 inches

Step-by-step explanation:

distance covered in one revolution by a bike tire is 2πr

where r is the radius of bike's tire

distance covered by bike in 20 revolution= 20×2πr

hence, 20×2πr=136

   ⇒  r=1.0828 feet

   ⇒  diameter =2r=2.1656 feet

1 feet =12 inches

⇒ 2.1656 feet= 12×2.1656 inches

                       = 25.9872 inches

hence, diameter of bike's tire is 25.9872 inches