基础坑挖方,砂子、石子等材料的验收,都要用棱台的体积公式来计算。但是,人们往往错误地将棱台的体积按“上底面积加下底面积,除以2再乘以高”或以“中线的面积乘以高”来计算。这样计算会造成工程量计算和材料验收不准,有时还会产生很大的误差,以致造成经济损失。现将棱 The acceptance of foundation pit excavation, sand, gravel and other materials must be calculated using the volume formula of the edge table. However, people often mistakenly calculate the volume of the truncated pyramid by the “bottom area plus the bottom area, divided by 2 times the height” or by the area of ​​the “middle line multiplied by the height”. This calculation will result in inaccurate engineering calculations and material acceptance. Sometimes, it will cause great errors, resulting in economic losses. Now