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/ ### 高等055:概率题
### 高等055:概率题
February 22, 2026
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则 $15t = 900$ 米,
所以耗时 $t = 60$ 秒。
机器人单程速度为 **1 米/秒**。
底半径 $r = 6$ cm
但圆锥顶角为 $60^\circ$通常指**顶点到底边的最小角度**,即**圆点与底面弧中心连线与侧边夹角**,
但更通用误解:若顶角为 $60^\circ$,常被解释为**圆锥的圆周角**,即底面圆的**圆心与两端连线所成角**为 $60^\circ$,即底面圆 Weih отримать $60^\circ$ 的 inequilater wings,
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