The simplest (and most commonly used)

**area**calculations are for squares and rectangles. To find the**area**of a rectangle multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the**area**.1

## What is the formula for area?

Area is measured in

**square**units such as**square**inches,**square**feet or**square**meters. To find the area of a**rectangle**,**multiply**the length by the width. The formula is: A = L * W where A is the area, L is the length, W is the width, and * means**multiply**.2

## How do you find the area of a room?

To measure your rectangular

**room**, use a tape measure, pencil and paper to record the length and width of the**room**. Once you have these two measurements recorded, multiply them to get the total**area**of the**room**.3

## What is perimeter and area?

Calculating the

**area**and the**perimeter**. The**perimeter**is the length of the outline of a shape. To find the**perimeter**of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle.4

## What is the formula for perimeter?

A Rectangle's

**Perimeter**. The**perimeter**of a rectangle is equal to the sum of all the sides. However, since a rectangle's opposite sides are congruent, we only need to know the length and width. We can write this in an**equation**this way: P = l + w + l + w.5

## What do you mean by areas?

**Math**Term

**Definition**.

**Area**. The

**area**of a flat, or plane figure is the

**number**of unit squares that can be contained within it. The unit square is usually some standard unit, like a square meter, a square foot, or a square inch.

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## How do you find the surface area?

**How to find the surface area of Rectangular Prisms:**

- Find the area of two sides (Length*Height)*2 sides.
- Find the area of adjacent sides (Width*Height)*2 sides.
- Find the area of ends (Length*Width)*2 ends.
- Add the three areas together to find the surface area.
- Example: The surface area of a rectangular prism 5 cm long, 3 cm.

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## How do you find the length?

To

**find**the width, multiply the**length**that you have been given by 2, and subtract the result from the perimeter. You now have the total**length**for the remaining 2 sides. This number divided by 2 is the width.8

## How do I find the volume?

Make sure that measurements are in the same units. Multiply the length by the width by the height. Check that the units are correct, e.g. m3

**Volume**of a cuboid = length x width x height.**Volume**measures the total amount of space taken up by a three-dimensional object such as a storeroom or a box.9

## How do you calculate the area of a circle?

To find the

**area**of a**circle**with the radius, square the radius, or multiply it by itself. Then, multiply the squared radius by pi, or 3.14, to get the**area**. To find the**area**with the diameter, simply divide the diameter by 2, plug it into the radius formula, and solve as before.10

## How do you work out square meters?

**Method 1**

**Calculating an Area in Square Meters**

- Choose a meter stick or metric tape measure.
- Measure the length of the area you're measuring.
- If you can't measure the entire length at once, do it in stages.
- Measure the width.
- Convert from centimeters to meters.
- Multiply the length and width together.

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## What is the definition of perimeter in math?

**Math**Term

**Definition**.

**Perimeter**. The

**perimeter**of a figure is the total distance around the edge of the figure. For example, a square whose sides are 6 inches long has a

**perimeter**of 6 x 4 = 24 inches because it has 4 sides 6 inches long.

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## How do I calculate the area of a triangle?

To find the

**area**of a**triangle**, multiply the base by the height, and then divide by 2. The division by 2 comes from the fact that a parallelogram can be divided into 2 triangles. For example, in the diagram to the left, the**area**of each**triangle**is equal to one-half the**area**of the parallelogram.13

## How do you find the area of a polygon?

Write down the formula for finding the

**area**of a regular**polygon**. To**find**the**area**of a regular**polygon**, all you have to do is follow this simple formula:**area**= 1/2 x perimeter x apothem. Here is what it means: Perimeter = the sum of the lengths of all the sides.14

## How do you calculate the volume?

To find the

**volume**of any cube you need to know the length, width and height. The**formula**to find the**volume**multiplies the length by the width by the height. The good news for a cube is that the measure of each of these dimensions is exactly the same. Therefore, you can multiply the length of any side three times.15

## How do you calculate the surface area of something?

**Part 1**

**Finding the Surface Area**

- Label the length, width, and height of your rectangular prism.
- Look at the six faces of the prism.
- Find the area of the bottom face.
- Find the area of the top face.
- Find the area of the front and back faces.
- Find the area of the left and right faces.
- Add the six areas together.

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## How do you figure out square footage?

Assume you have a rectangular area such as a room and, for example, you want to calculate the

**square**footage area for flooring or carpet. The way to calculate a rectangular area is by measuring the length and width of your area then multiplying those two numbers together to get the area in**feet**squared (ft^{2}).17

## How do you find the area and perimeter of a triangle?

To

**find**the**perimeter**of the square, add all four sides together. To**find**the**area**of a**triangle**, multiply together two of the sides (not the hypotenuse) and then multiply that figure by 1/2. To**find**the**perimeter**of the**triangle**, add all three sides together.18

## How do you find the area of a trapezium?

To calculate the

**area**of a**trapezium**, divide it into a rectangle and two triangles as shown below. Now, piece together the triangular ends so that the**trapezium**is divided into a triangle and rectangle. The base of the triangle is the difference between the lengths of two parallel sides. That is, a – b.19

## How can you find the circumference of a circle?

**How to find the circumference of a circle:**

- The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.
- If a circle has a diameter of 4, its circumference is 3.14*4=12.56.
- If you know the radius, the diameter is twice as large.

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## How do I find the perimeter of a rectangle?

To

**find the perimeter**of a**rectangle**, add the lengths of the**rectangle's**four sides. If you have only the width and the height, then you can easily**find**all four sides (two sides are each equal to the height and the other two sides are equal to the width). Multiply both the height and width by two and add the results.