A wheel has a radius of 15 cm. Approximately how far does it travel in 4 revolutions?

1 Answer
May 17, 2016

≈ 3.7699m

Explanation:

We require to calculate the circumference (C) of the wheel.

#color(red)(|bar(ul(color(white)(a/a)color(black)(C=2pir )color(white)(a/a)|)))#
where r is the radius of the wheel.

We require 4 complete revolutions of the wheel.

#rArr" distance travelled "=4xx2pir#

#=4xx2pixx15=120pi≈376.99cm=3.7699m#