中科新闻网幼儿园保安配备八件套:Math!!!!!Math~~~~
来源：百度文库 编辑：中科新闻网 时间：2024/05/09 16:12:42
A cow is attached to a rope 10 feet long in a pasture bordered by two fence( more than 10 feet long) meeting at an angle of 60 degree. What is the area of the space in which the cow is grazing?
牛能吃到草的面积就是一个角为60度的扇形。
所以，
the area of the space in which the cow is grazing=(1/6)*3.14*10*10=0.52