Need help with a math question please
Favorites|Homepage
Subscriptions | sitemap
HOME > Mathematics > Need help with a math question please

Need help with a math question please

[From: ] [author: ] [Date: 11-06-14] [Hit: ]
8cm-(s) = 2π/3 * 4.2 = 8.......
What is the length of the arc of the circle that has a central angle of 2π/3 and a radius of 4.2cm?

how would you go about solving this?
thanks for your help. :)

-
the arc length of a full circle is the circumference =2(pi)r
2pi is the centre angle in radians equal to 360 degrees.

so your answer is (2pi/3) x 4.2=8.4xpi/3=8.8cm

-
(s) = 2π/3 * 4.2 = 8.79

arc length is the angle under the arc times the radius of the circle
1
keywords: please,help,question,Need,math,with,Need help with a math question please
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .