Answer:
Using the shortcut keys Alt+O+R+A
Using Home/Cells/Format/Auto Fit Row Height
Double-clicking the bottom of the row number box
Explanation:
The excess row height could be resulted, if you set a row height manually. It can be fixed by some shortcut, or using the functions available in the Tabs.
You can fix this by Entering a short key of Alt+O+R+A. It will automatically adjust you row height according to format and data in the specific row.
Use Pathway of Home/Cells/Format/Auto Fit Row Height to adjust the height of the row according to format and data in the specific row.
You can also adjust the row height by Double clicking the bottom of the number box of the row.