Surface-to-Volume Ratio (starts p.6) There are blacks of four kinds, illustrated below. To simplify the calculation of total surface area and volume, the drawings are labeled with the number of square...

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Extracted text: Surface-to-Volume Ratio (starts p.6) There are blacks of four kinds, illustrated below. To simplify the calculation of total surface area and volume, the drawings are labeled with the number of square area units each side represents, and the number of cubic volume units the whole block represents. To calculate the surface to volume ratio of a construction: -Add up the area units of all of the exposed surfaces -Add up the volume units of all of the blocks in the construction An exposed surface is any side or end that is not completely covered by the side or end of another block. For example, the short ngrrwblock has four sides that each have an area of 2 square area units, and two ends that each have an area of 1 square area unit. The total surface area of that block is therefore 10 square area units (2+2+2+2+1+1). Since its volume is 2 cubic units, its surface-to-volume ratio is 10 sq. area units/2 cu. volume units = 5 unit. Remember: Volume of a 3-D object (units') = length x width x height sq. area units per cu. volume Surface Area of a 3-D object (units) = sum of (1length x width) for each side long wide 1x2x4 short wide I x2 x2 long narrou DIMENSIONS - short narrow ixl x2 5.A. each'side 2. Volume -+ 2 cu. volume units 4 cu. Volume units 8 cu. volume units 4 cu. volume units Total Surface 10 sq. area units 18 sg. area units 28 sq, area units 16 sq. area units wh Area SA SF 2.