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

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

Add l + l + w + w. Instead of adding two sides of your rectangle and multiplying by two, you can simply add all four sides together directly to find the perimeter of your rectangle.

## How do I find the perimeter of an irregular shape?

To find the perimeter of an irregular shape, we simply add up each of its outer sides. units. will be a length measurement (e.g. centimetres). We decide which irregular shape we have based on the number of sides or corners that it has.

How do you find the missing length of a compound shape?

To find the missing horizontal length, we will look at the values of the other horizontal lengths. Looking at the composite shape, the side that is 12 cm long is the same as both the missing side plus the side that is 4 cm long. We can therefore find the missing length by subtracting 6 cm from 9 cm.

How do you find the area and perimeter of a complex shape?

To calculate the perimeter of a polygon, add together the length of each side. For complex figures, divide the figure into more recognizable parts. Then find the sum of the area of the parts. When finding the perimeter of a complex region, be sure that the sum only includes the edges on the outside of the region.

### What is the formula of perimeter?

Perimeter, Area, and Volume

Table 1 . Perimeter Formulas
Shape Formula Variables
Square P=4s s is the length of the side of the square.
Rectangle P=2L+2W L and W are the lengths of the rectangle’s sides (length and width).
Triangle a+b+c a,b , and c are the side lengths.

### How do you find the length and width if you have the area and perimeter?

Let P be the perimeter of a rectangle and A its area. Let W and L be, respectively, the width and length of the rectangle. Find W and L in terms of P and A. Solve the above equation for L and find W using W = P / 2 – L.

How do you find the perimeter when given the area?

Perimeter of a Rectangle

1. Remember the formula for perimeter and area of a rectangle. The area of a rectangle is a = length * width, while the perimeter is p = (2 * length) + (2 * width)
2. Substitute the known values into the area formula. 36 = 4 * w.
3. Substitute values for length and width into the perimeter formula.

How do you find the perimeter calculator?

How to find perimeter – perimeter formulas

1. Square perimeter formula: P = 4a.
2. Rectangle perimeter formula: P = 2(a + b)
3. Triangle perimeter formulas:
4. Circle perimeter formula: P = 2Ïr.
5. Circle sector perimeter formula: P = r(Î± + 2) ( Î± is in radians)
6. Ellipse perimeter formula: P = Ï(3(a + b) – ˆš((3a + b) * (a + 3b)))

## Is area bigger than perimeter?

Is the perimeter of a rectangle bigger than the area? Perimeter of a rectangle is a sum of linear measurements and area is multiplication of linear measurements. For example, we consider a rectangle of length 10 m and width 5 m. In this case area is bigger than perimeter.

## How are area and perimeter related?

What is the difference between the perimeter and area of a shape? The perimeter is the sum of all the side lengths of a shape. The area is the amount of two dimensional space a shape occupies.

Is it possible for a floor to have the same perimeter but a larger area?

Perimeter can be used to calculate the length of fence required to surround a yard or garden. Two shapes may have the same perimeter, but different areas or may have the same area, but different perimeters.

Can two squares of different sizes have the same perimeter?

The definition of a square means that all 4 sides are the same. Therefore, if two squares have different sides, thus different sizes, they cannot have the same perimeter.

### Can two different shapes have the same area and perimeter?

Yes, as others have demonstrated, you can have different shapes given the same area, perimeter, and number of segments. You could easily imagine an infinite number of keys like this each uniquely represented by 7 numbers. I would consider perimeter and area nice, continuous metrics.

### Can two different size rectangles have the same area?

Answer Expert Verified If ‘size’ means ‘area’ to you, then no. ‘Same size’ means ‘same area’. is, or what the width is, but if the product of those two numbers is the same, then the rectangles have the same area.

Does area change with shape?

When the dimensions of the shape, such as radius, height, or length change, both surface area and volume also change. However, the volume of the object always changes more than the surface area for the same change in dimensions.

Why does area change when perimeter stays the same?

Let’s says the rectangle has sides of length A and B and the square has sides of length C. Because they have the same perimeter we can say A+B=2C. so the area of the square will be greater than that of the rectangle by the square of difference of the sides length.

## Do all rectangles have even perimeters?

T: You’re close! All the rectangles that we made had whole number side lengths. When we add whole number side lengths and double them, the perimeter will be even. (Pass out an 11-inch-long piece of string to each pair.)

## Is there a relationship between the area and perimeter of a rectangle?

There is no direct relationship between the perimeter of a rectangle and its area.

When all the sides of a rectangle are odd numbers the perimeter is even?

The perimeter of a rectangle will always be an even number. If a rectangle has two sides which are odd numbers, then the perimeter will also be an odd number.

Can a rectangle have an odd perimeter?

Answer Expert Verified An odd perimeter can only happen if either the length or the width is a fraction with 1/2 in it, or both the length and the width have a 1/4 in it.

### Is around the perimeter?

Perimeter is the distance around a two dimensional shape, a measurement of the distance around something; the length of the boundary.

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

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 and width?

For a square or rectangular room, you will first need to measure the length and then the width of the room. Then multiply the length and width. Length x Width = Area. So, if your room measures 11 feet wide x 15 feet long, your total area will be 165 square feet.

What is the formula of length?

Formulas for Arc Length

Arc Length Formula (if Î¸ is in degrees) s = 2 Ï r (Î¸/360Â°)
Arc Length Formula (if Î¸ is in radians) s = Ï´ Ã— r
Arc Length Formula in Integral Form s= int^{b}_asqrt{1+(frac{dy}{dx})^2}dx