板钩绾胯绂绘浠澶杩

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(R+h)2 = R2 + d2

绠寰锛

d2 = h2 + 2Rh

瀵逛袱杈瑰跺硅璐瑰寰锛

d = (h2 + 2Rh) d = (h2 + 2Rh)1/2

浠寮ワ板钩绾跨璺绂d涓搴h筹h瓒澶эd瓒澶с浠ｅhR硷璁＄d笺

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