Question

A bicycle wheel is 63m in diameter. how many metres does the bicycle travel for 100 revolutions of the wheel. (pie=²²/⁷​

Answer 1

19782m

Explanation:

1 revolution = circumference

circumference = π * diameter

π = 3.1416

Then

circumference = 3.1416 * 63

= 197.92m

1 revolution = 197.82m

100 revolutions = 100*197.82m

= 19782m

Answer 2

19.8 km

Explanation:

To find:-

• The distance travelled in 100 revolutions .

Answer:-

We are here given that,

• diameter = 63m

We can first find the circumference of the wheel using the formula,

`:\implies \sf C = 2\pi r \\`

Here radius will be 63/2 as radius is half of diameter. So on substituting the respective values, we have;

`:\implies \sf C = 2* (22)/(7)* (63)/(2) \ m \\`

`:\implies \sf C = 198\ m \\`

Now in one revolution , the cycle will cover a distance of 198m . So in 100 revolutions it will cover,

`:\implies \sf Distance= 198(100)m\\`

`:\implies \sf Distance = 19800 m \\`

`:\implies \sf Distance = 19.8 \ km\\`

Hence the bicycle would cover 19.8 km in 100 revolutions.