装水最多的形状用材料量相同情况下,什么形状装水最多?抛物线Y=X^2,M(-1,1)N(1,1)区间,MN弧长计算得ln(2+5^0.5)+5^0.5/2约等于2.56,换算为半圆周则R为2.56/pi=0.81,半球体积=4/3PR^3/2约1.11,小于抛物线旋
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![装水最多的形状用材料量相同情况下,什么形状装水最多?抛物线Y=X^2,M(-1,1)N(1,1)区间,MN弧长计算得ln(2+5^0.5)+5^0.5/2约等于2.56,换算为半圆周则R为2.56/pi=0.81,半球体积=4/3PR^3/2约1.11,小于抛物线旋](/uploads/image/z/6492488-32-8.jpg?t=%E8%A3%85%E6%B0%B4%E6%9C%80%E5%A4%9A%E7%9A%84%E5%BD%A2%E7%8A%B6%E7%94%A8%E6%9D%90%E6%96%99%E9%87%8F%E7%9B%B8%E5%90%8C%E6%83%85%E5%86%B5%E4%B8%8B%2C%E4%BB%80%E4%B9%88%E5%BD%A2%E7%8A%B6%E8%A3%85%E6%B0%B4%E6%9C%80%E5%A4%9A%3F%E6%8A%9B%E7%89%A9%E7%BA%BFY%3DX%5E2%2CM%28-1%2C1%29N%281%2C1%29%E5%8C%BA%E9%97%B4%2CMN%E5%BC%A7%E9%95%BF%E8%AE%A1%E7%AE%97%E5%BE%97ln%282%2B5%5E0.5%29%2B5%5E0.5%2F2%E7%BA%A6%E7%AD%89%E4%BA%8E2.56%2C%E6%8D%A2%E7%AE%97%E4%B8%BA%E5%8D%8A%E5%9C%86%E5%91%A8%E5%88%99R%E4%B8%BA2.56%2Fpi%3D0.81%EF%BC%8C%E5%8D%8A%E7%90%83%E4%BD%93%E7%A7%AF%3D4%2F3PR%5E3%2F2%E7%BA%A61.11%EF%BC%8C%E5%B0%8F%E4%BA%8E%E6%8A%9B%E7%89%A9%E7%BA%BF%E6%97%8B)
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