[填空题]
A bakery has designed a box to deliver their specialiv(, qk e1v6xhxty birthday cakes.b fxxu*+-suyiu m+ ; 8sru5slo:i98 zz The box has a rectangular prism base, with a rectangular pyramid top, as illustrated in the diagr:zbili+ 5 *oxuu9z 8mfuys ru -8+ssx;am below with dimensions shown.
After the cake is put into the box, the outside of the box is completely wrapped in colourful gift paper.
Point O shown on the diagram is the midpoint of the base of the pyramid.
1.Find the value of a shown in the diagram; the slant height of one of the pyramid faces. cm
2.Find the total outer surface area of the box to be wrapped in gift paper. $cm^2$
