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#
