A cent is equal to one hundredth of an acre, or 435.6 square feet. Therefore, ten cents is equal to 10 x 435.6 = 4356 square feet.
A Mekko chart (sometimes also called marimekko chart) is a two-dimensional stacked chart. In addition to the varying segment heights of a regular stacked chart, a Mekko chart also has varying column widths. Column widths are scaled such that the total width matches the desired chart width.
One of the key differences between a PERT chart and a Gantt chart is the way the information is presented. Gantt charts present information in the format of a bar chart. This presentation helps show the percentage of work completed for each task. A PERT chart, on the other hand, displays information as a network model.