如图,用邻边分别为a,b(a<b)的矩形硬纸板裁出以a为直径的两个半圆再裁出与矩形的较长边、两个半圆均相切的两个小圆.把半圆作为圆锥形圣诞帽的侧面,小圆恰好能作为底面,从而做成两
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![如图,用邻边分别为a,b(a<b)的矩形硬纸板裁出以a为直径的两个半圆再裁出与矩形的较长边、两个半圆均相切的两个小圆.把半圆作为圆锥形圣诞帽的侧面,小圆恰好能作为底面,从而做成两](/uploads/image/z/14592534-6-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%94%A8%E9%82%BB%E8%BE%B9%E5%88%86%E5%88%AB%E4%B8%BAa%2Cb%EF%BC%88a%EF%BC%9Cb%EF%BC%89%E7%9A%84%E7%9F%A9%E5%BD%A2%E7%A1%AC%E7%BA%B8%E6%9D%BF%E8%A3%81%E5%87%BA%E4%BB%A5a%E4%B8%BA%E7%9B%B4%E5%BE%84%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%8D%8A%E5%9C%86%E5%86%8D%E8%A3%81%E5%87%BA%E4%B8%8E%E7%9F%A9%E5%BD%A2%E7%9A%84%E8%BE%83%E9%95%BF%E8%BE%B9%E3%80%81%E4%B8%A4%E4%B8%AA%E5%8D%8A%E5%9C%86%E5%9D%87%E7%9B%B8%E5%88%87%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%B0%8F%E5%9C%86%EF%BC%8E%E6%8A%8A%E5%8D%8A%E5%9C%86%E4%BD%9C%E4%B8%BA%E5%9C%86%E9%94%A5%E5%BD%A2%E5%9C%A3%E8%AF%9E%E5%B8%BD%E7%9A%84%E4%BE%A7%E9%9D%A2%2C%E5%B0%8F%E5%9C%86%E6%81%B0%E5%A5%BD%E8%83%BD%E4%BD%9C%E4%B8%BA%E5%BA%95%E9%9D%A2%2C%E4%BB%8E%E8%80%8C%E5%81%9A%E6%88%90%E4%B8%A4)
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