Question

the diameter of a cycle wheel is 28 cm how many revolutions will it take in moving 11 km​

Answer 1

Answer:

12500

Step By Step Explanation:

Given:

Diameter of a cycle wheel = 28 cm

Radius = (28/2) cm = 14 cm

Now,

Circumference = 2 π r

                        ⇒ 2 × 22/7 × 14 cm

                        ⇒ 2 × 22 × 2 cm

                   ⇒ 88 cm

Given: Distance = 11 km

Converting it into cm:

11 km = 11 × 1000 × 100 cm

     ⇒ 1100000 cm

Again,

Revolution = 1100000/88

              ⇒ 12500

Hence, It will take 12500 revolutions in moving 11 km.