The App is simple to use. Just enter the marked values such as sides, height, the radius, etc and the area will be calculated for you. To enter a value for a height, side, radius just touch the diagram on or near the one you want to specify. The keypad pops up. Enter the value you want and select OK. Select the other values and do the same. When the App has the required information for the shape it will calculate the answer for you and show the formula used. To start over select 'Clear All'. All values for that shape are reset. You can select what shape to calculate the area for using the control at the top of the screen. You can change the units shown for the values by pressing the Preferences button, selecting the units you want and select Save.
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