# How do you find the length of a rectangle if the area is given?

## How do you find the length of a rectangle if the area is given?

Let’s discuss how to find length or breadth when area of a rectangle is given.

1. When we need to find length of a rectangle we need to divide area by breadth.
2. Length of a rectangle = Area ÷ breadth.
3. ℓ = A ÷ b.
4. Similarly, when we need to find breadth of a rectangle we need to divide area by length.

## What is the formula of length?

Formulas for Arc Length

Arc Length Formula (if θ is in degrees) s = 2 π r (θ/360°)
Arc Length Formula (if θ is in radians) s = ϴ × r
Arc Length Formula in Integral Form s= ∫ a b 1 + ( d y d x ) 2 d x

How do you find the length of an area?

To find the length (L) of a rectangle given area (A) and width (W), you need to:

1. Know the equation for a rectangle area is A = L × W.
2. Determine L from that previous equation. L = A/Q.

### How do you solve for length and width?

The formula for the perimeter, ‘P’ of a rectangle whose length and width are ‘l’ and ‘w’ respectively is P = 2(l + w). To calculate the length and width of a rectangle first, calculate the value of width ‘w’ by using the area of rectangle formula that is, ‘w = A/l’.

### How do you find the length and width of a rectangle if you only have the area?

To sum up: to find the length of a rectangle, you need to divide its area by the known width.

How do you find the length and width with only the perimeter?

Explanation: 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.

## How do you find the length of a 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.

## How do you find the perimeter of a rectangle without the length?

To find the perimeter of a rectangle, use the formula P = 2 × (l + w). First, find the length and width of the rectangle, and place them in the “l” and “w” variables in the equation. Then, add these measurements together.

How do you find the missing 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.

### How do you find the volume of a rectangle?

Use a calculator to find the volume of the rectangle by multiplying the length, width and height. However, when calculating the volume of a rectangle attached to a triangle, find the area of the base and multiply it by the height. The area of the base is found by multiplying the length by the width of the rectangle.

### What is the formula to find a width of rectangle?

If you do not know the area or the perimeter,or the relationship between the length and the width,you cannot use this method.

• The formula for area is A = ( l) ( w) {\\displaystyle A= (l) (w)} .
• The formula for perimeter is P = 2 l+2 w {\\displaystyle P=2l+2w} .
• How do you calculate the dimensions of a rectangle?

Given length and width: d = √ (l²+w²),

• Given length/width and area: d = √ (A²/l²+l²) or d = √ (A²/w²+w²),
• Given lenght/width and perimeter: d = √ (2l² – P*l+P²/4)) or d = √ (2w² – P*w+P²/4),
• Given length/width and angle: d = w/sin (α/2) or d = l/cos (α/2),
• Given area and perimeter: d = √ (P² – 2*A),
• ## How to find the dimensions for a rectangle?

How to Find the Dimensions for a Rectangle Find the length of the rectangle by measuring one of the longer sides. Add the measurements of all four sides to find the perimeter. Find the area by multiplying the length and width. Find the volume of your rectangle by multiplying the area by the height. Contents1 ]