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=wada35 link ch9 **7.1**= Suraface area and volume formulas for a rectangular prism. S will be surface area, V will be volume, L will be length, W will be width, and H will be hight. The formula for surface area is: S=2LW+2WH+2LH The formula for volume is: V=LWH To finde the suraface area and volume of a cube C will be side. The formula for surface area is: S=6C^2 The formula for volume is: V=C^3 Example: A chip company is choosing between two box designs with the dimensions of the first box 8in by 4in by 5in. and the second box has dimensions 10in by 2in by 8 in. Both of the boxes have a volume of 160 cubic in. The suraface area of box one is 2(8))(5)+2(4)(5)+2(4)(8)=184in. The suraface area of box two is 2(10)(8)+2(2)(8)+2(2)(10)=232in. Box one has the smaller suraface area it would be the chepest box to make.



=7.2= Bold words:
 * Altitude** of a prism is a segment that has end points in the planes containing the bases and that is perpendicular to both planes.
 * Height** of a prism is the length of an altitude.