已知一立體有圓底,公式為 x^2 + y^2 = 4,且與X軸垂直的切面為正方形,邊在圓上/內.
求體積.
看樓主既然是AP的,那么就知道 a^2 + y^2 = 4 的圓圓心為在原點,半徑為2.既然切面垂直于X軸,那么指的就是縱切面.既然這圓柱體的縱切面為正方形,說明高于直徑相等,為4.圓柱體體積公式為底乘高,就等于 2 x pi x 2 x 4 = 16 pi,按要求化簡或保留exact value.
這是物理嗎?
AP物理suppose we are asked to find volume of a solid whose base is the circle
AP物理suppose we are asked to find volume of a solid whose base is the circle
suppose we are asked to find volume of a solid whose base is the circle x^2+y^2=4,and where cross-sections perpendicular to the x-axis are all square whose sides lie on the base of the circle.how would we find the volume?
suppose we are asked to find volume of a solid whose base is the circle x^2+y^2=4,and where cross-sections perpendicular to the x-axis are all square whose sides lie on the base of the circle.how would we find the volume?
英語人氣:661 ℃時間:2020-09-09 05:07:34
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