Guardrail will spray paint the stone Roman column, area of how to calculate

At present, some new villa was built themselves, more or less adds some line components as the collocation of the building, makes the building more features and beautiful. In general, the Roman column, window cover, railing, window eaves and other line component is commonly used. So, house needs with stone paint, these lines components together with stone paint is needed to look beautiful. As is known to all, the number of stone paint is calculated according to the area of the house, but the Roman column and the appearance of the barrier is not square, you is how to calculate the area of them? The following series is a set of formula. You can also remember what you need partner! Roman column area of conversion: column diameter * 3. Height of 14 * * 1. 6 ( Developed area and loss) Column = actual paint square number, for example: 30 * 0. 3 * 3. 14 * 4m( Height) * 1. 6 = 6 m actually paint square number curtain, cornice line area of conversion line width * * 1. 6 ( Developed area and loss) Square number = actual paint fence area reduced length * width * 1. 6 ( Developed area and loss) Square number = actual paint