The lateral expansion figure of a cone is a sector with a radius of 8cm and a central angle of 120°. What is the radius of the base of the cone in cm?
一个圆锥的侧面展开图形是半径为8cm，圆心角为120°的扇形，则此圆锥的底面半径为多少cm
<gadget id="calculator">8 / 3</gadget>
<output>8/3 = around 2.666667</output>

<result>8/3 = around 2.666667</result>