Question

The wheels of a bicycle have a diameter of 70cm. How many meters will the bicycle travel if each wheel makes 50 revolutions

Answer 1

Answer:

see explanation

Step-by-step explanation:

1 revolution is equivalent to the circumference of the wheel

1 revolution = πd ( d is the diameter )

                    = 70π cm

50 revolutions = 70π × 50 = 3500π cm = 35π m ≈ 110m ( nearest metre )

Answer 2

Answer:

109.956 m

Step-by-step explanation:

The first step is to find the circumference of the wheel.

C = πd

where d = diameter of the wheel

C = πd

   = π × 70

  = 219.9 cm.

In every revolution the bicycle move 219.9 cm.

In 50 revolution the bicycle will make = 219.9  × 50

                                                               = 10,995.6 cm

In meter = 10,995.6 ÷ 100

               = 109.956 m