Hi ,
Another clarification ; you cannot set the dimensions of individual cells ; if you set the height of A1 , you are setting the height of row 1. If you set the width of A1 , you are setting the width of column A.
Thus , when you say the size of A1 = 5 cm. while the size of A2 = 10 mm. , these sizes can only refer to their heights and not their widths.
Similarly , when you say the size of B1 = 15 cm. , this size can only refer to the width and not the height , since the height of B1 will be identical to the height of A1.
Narayan