# How do you find the area of a door?

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

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.

## What is area formula?

Perimeter, Area, and Volume

Table 2. Area Formulas
Shape Formula Variables
Square A=s2 s is the length of the side of the square.
Rectangle A=LW L and W are the lengths of the rectangle’s sides (length and width).
Triangle A=12bh b and h are the base and height

## How do you find the area of an object?

Find the area of a square or rectangle by multiplying the length times the width. This formula looks like l*w. If the length is 5 and the width is 2, the area is 10 square units. Calculate the area of a four-sided shape that is not a rectangle by multiplying the base (one of the sides) by the height.

## What is the perimeter formula?

The perimeter is equal to the boundary of the rectangle which can be calculated with the formula: Perimeter = Length + Length + Width + Width = 2(Length + Width).

## How do u find the mean?

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

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## What are the formulas for area and perimeter?

Area and Perimeter Formula Chart

Figures Area Formula Variables
Area of Rectangle Area = l × w l = length w = width
Area of Square Area = a2 a = sides of the square
Area of a Triangle Area = 1/2 b×h b = base h = height
Area of a Circle Area = πr2 r = radius of the circle