https://bgk-photo.cdn.bcebos.com/cc11728b4710b912c5c5689fd3fdfc039245224e.jpg从卫生纸的包装纸上得到以下资料:两层300格,每格11.4cm×11cm,如图甲。用尺量出整卷卫生纸的半径(https://bgk-photo.cdn.bcebos.com/622762d0f703918fd3f6a3ab413d269759eec4a8.jpg)与纸筒内芯的半径(https://bgk-photo.cdn.bcebos.com/c995d143ad4bd11341c929534aafa40f4bfb054e.jpg),分别为5.8cm和2.3cm,如图乙。那么该两层卫生纸的厚度为多少cm?(π取3.14,结果精确到0.001cm)解:
https://bgk-photo.cdn.bcebos.com/cc11728b4710b912c5c5689fd3fdfc039245224e.jpg从卫生纸的包装纸上得到以下资料:两层300格,每格11.4cm×11cm,如图甲。用尺量出整卷卫生纸的半径(https://bgk-photo.cdn.bcebos.com/622762d0f703918fd3f6a3ab413d269759eec4a8.jpg)与纸筒内芯的半径(https://bgk-photo.cdn.bcebos.com/c995d143ad4bd11341c929534aafa40f4bfb054e.jpg),分别为5.8cm和2.3cm,如图乙。那么该两层卫生纸的厚度为多少cm?(π取3.14,结果精确到0.001cm)解:
发布时间：2025-04-01 14:30:16
)与纸筒内芯的半径(
),分别为5.8cm和2.3cm,如图乙。那么该两层卫生纸的厚度为多少cm?(π取3.14,结果精确到0.001cm)解:设该两层卫生纸的厚度为xm则:11×11.4×x×300=π(5.82-2.32) ×11X≈0.026答:设两层卫生纸的厚度约为0.026cm
