[填空题]
A bakery has designed aa2*kol4ky m+*hz ) k4 twr8fpa bo;2d+ocsag dqn8jlw 8( m+d2a7nor (rzx to deliver their speciality birthday cakes. The box has a rectangular prism base, with a rectangular pyramiddlaarw 2d+r s7m8 non2q(+j(8d zgc;o top, as illustrated in the diagram 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. $cm^2$
