Question

A circular traffic island "roundabout" in Road Town has a radius of 12.5 m. If you drove around it twice, what would be the distance you traveled?

Answer 1

157.14 m

Solution,

1 round = circumference

`2\pi \: r`

`= 2 * (22)/(7) * 12.5`

`= (44)/(7) * 12.5`

Required distance covered:

`2 * (44)/(7) * 12.5 \\ = (88 * 12.5)/(7) \\ = 157.14 \: m`

hope this helps..

Good luck on your assignment...

Answer 2

About 157 meters

Explanation:

The circumference of a circle is
`2\pi r`. In this case, this means that one loop around the roundabout would be a distance of:

`2\cdot \pi \cdot 12.5\approx 78.5`

Multiplying this by 2, you get a distance of about 157 meters. Hope this helps!