Bacterial Cells. Bacterial cells are very small-about 10 times smaller than most plant and animal cells. Most bacterial cells range in size from 0.2 to 10 microns or micrometers (0.0000079 to 0.00039 inches). Common Escherichia coli, or E.coli, bacteria are rod-shaped bacteria, 1 micron by 2 microns long.
1 Installing a concrete paver patio averages between $8 and $15 per square foot.  Stone: The most natural option, stone comes in several sizes, textures, colors and styles. Most homeowners opt for stone to create a design-focused patio. Installing a stone paver patio averages between $4 and $8 per square foot.
Typical costs: 1  A professionally installed concrete paver driveway typically costs about $6-$20 or more a square foot, or $1,800-$4,500 for a 12'x25' driveway or $5,800-$14,500 for a 24'x40', depending on the pavers chosen; the complexity of the design; the amount and type of landscaping or existing pavement that has to be removed; and local rates.