Credit:Cristian LazzariE+Getty Images

Q:A:### Quick Answer

**To calculate the area of a structure or section of land mass in square miles, use the formula for area of the section's shape with the dimensions, such as length, width, and radius, in miles.** Not all sections of land or buildings have a simple shape, in which case the section should be divided up into simple shapes as well as possible to get an exact answer or a good estimate.

The area of a simple square plot of land can be calculated by measuring one side in miles and squaring that number. Simple formulas for area for triangles, circles, rectangles, parallelograms and other shapes can also be used when appropriate to calculate area.

Learn more about Arithmetic- Q:
## What is the formula for calculating population density?

A:

Full Answer >**The formula for calculating population density requires dividing the area occupied, typically in square miles or square kilometers, by the number of people living there.**Though population density usually refers to people, the term also applies to animals in a particular habitat.Filed Under: - Q:
## How do you calculate gross floor area?

A:Calculating the gross floor area requires you to know the area of the floors and the width of the interior walls. For the floors, you will need a tape measure and a calculator. To determine the wall width, you may need to contact the builder. The only rooms that aren't included are plazas or rooftops.

Full Answer >Filed Under: - Q:
## What is the square footage of a house with the dimensions 30 feet by 40 feet?

A:

Full Answer >**The square footage of a house is found by multiplying length times width, so a house that is 30 feet by 40 feet measures 1,200 square feet, assuming the house has only one story.**The square footage of additional stories should be added as part of the total square footage.Filed Under: - Q:
## How do you use a T-square?

A:To use a T-square, place it flat on a drawing board, secure it in place and use it in conjunction with other drawing tools to create the desired shape. The general usage of a T-square takes only a few minutes and requires the T-square, paper, a pencil and a drawing board. A square, triangle or French curve may be necessary for other shapes.

Full Answer >Filed Under: