what is the circumference of a circle whose central angle is 60.and the radius is 12ft?

来源：学生学帮网编辑：学帮网时间：2024/06/01 03:29:44

2*pi(如果你取3.14的话）*12=circumference of the whole circle(得到整个圆的周长）=75.36ft
然后圆心角(60/360)*75.36=12.56ft,就这么算

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