d=8cm+h=2d求表面积
1个回答
关注
展开全部
不好意思,订正一下正确答案是d=8cm, h=2d=16cmS底=π(d/2)^2=3.14*(8/2)^2=3.14*16=50.24( cm^2)S侧= πdh=3.14*8*16=401.92( cm^2)S表=2S底+S侧=2*50.24+401.92=502.4( cm^2)答,表面积为502.4cm^2
咨询记录 · 回答于2023-02-23
d=8cm+h=2d求表面积
是什么图形
d=8cm h=2d
d=8cm,h=2d求什么图形的表面积
d=8cm, h=2d=16cmS底=π(d/2)^2=3.14*(8/2)^2=3.14*16=50.24( cm^2)S侧= πdh=3.14*8*16=401.92( cm^2)S表=2S底+S侧=2*50.24+401.92=502.2( cm^2)答,表面积为502.2cm^2
不好意思,订正一下正确答案是d=8cm, h=2d=16cmS底=π(d/2)^2=3.14*(8/2)^2=3.14*16=50.24( cm^2)S侧= πdh=3.14*8*16=401.92( cm^2)S表=2S底+S侧=2*50.24+401.92=502.4( cm^2)答,表面积为502.4cm^2
最后一段是正确答案