Instructions: Prepare the quantity sheets using a single file in Microsoft Excel software.

Activity $3\mathrm{.}1-$ Ledger Sheet Activity $($p$67)$: Refer to Print $3-1$ and Quantity Sheet No$.3-1.$

Take off the square feet of floor area for TV Seminar Room $320,$ Project Lab $321,$ and Project Lab $323.$ Calculate the total area $($in square feet$)$ of the three rooms.