- How to Calculate the Area of a Square?
- Square Footage of a Circle
- Square Footage of a Triangle
- How to Figure Square Footage of a House?

This is not only the main mathematical topic, but also one of the most practical and popular things in everyday life. For example, you need to know the floor area in your room to determine how much parquet it will need. The theme of the square is relevant in construction, engineering, architecture, sculpture, drawing and even solving everyday issues.

Next, you will learn how to calculate the areas of the main figures, how to find out the total footage of your home and much more.

**How to Calculate the Area of a Square?**

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It is also worth considering the rectangle (and most of the objects on the terrain are usually rectangular in shape). It has a width (*a*) and a length (*b*). The area value is determined quite simply: *a*b*.

**How big is a square foot in inches? **You may wonder about this and similar transitions. So, 1 square foot equals 144 square inches, and m²=ft²/10.764.

**Read more:**** 8 Tips for Using the TI-84 Graphing Calculator on the SAT**** **

**Square Footage of a Circle**

It is pretty easy to calculate if we know the radius. We are also going to need the number *π*. So, the area is calculated by multiplying: *3,14*r**2*.

Let us look at a more complex problem. Calculate the area of the hatched figure if *a=16cm*.

The area of the large semicircle is *π*r**2**/2=8**2* *π* */2=32π*.

Two smaller semicircles form a circle, so the **square measurement** is *π*4**2**=16π*. Thus, we have a difference of 32π–16π. So the area of the hatched figure is *16π*.

**Square Footage of a Triangle**

To calculate the area of a triangle, its height (denote it *h*) and the length of one of the sides (*a*) are used. And **sq ft of triangle** is *½*a*h*.

As for the right triangle, we need its sides, which form a right angle. Let's call them *a* and *b*. So, the area will be equal to ½*a*b.

And now consider the equilateral triangle (each side is *a*). In this case, the area value is calculated as *(a2*√3)/4*.

**Read more: ****How to Calculate Percentage Error?**

**How to Figure Square Footage of a House? **

To measure the area, it is necessary to measure the length (*a*) and width (*b*) of the walls in each room. This is done with a tape measure, and it is best to use a construction tape because it has a fairly large length and perfectly holds a flat line. All measurements are taken accurately along the walls.

When the room measurements are finished and everything is recorded, you can proceed with the calculations. **Formula for sq feet**: *а*b*. Now add all the results obtained by the area of each room – it will be the total living area of your house or apartment.

And what if the rooms are, for example, irregularly shaped? A math tutor will help you figure out how to solve practical problems. 99% of private lessons are practice, and the one that will be needed in professional and everyday life.