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

see explanation

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

109.956 m

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