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Q: How do you find a perimeter of a rectangle with one number given?

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You cannot.

Height = (Perimeter/2) - Base

Perimeter = 2*(L + W).

You multiply the length by 2 (because there are two sides of the rectangle that have that measure). You then subtract that number from the perimeter. The number you will be left with is twice the width, so you divide that by two and you get the width of the rectangle.

Multiply length by width

Length = (Perimeter - twice width) / 2

There is no reason for the perimeter of a triangle to have any relation to the perimeter of an unrelated rectangle!

the perimeter of a rectangle is calculated by : 2*(l+b)

The length of a rectangle is twice its width. If the perimeter of the rectangle is , find its area.

find the perimeter and area of a rectangle that is 15cm long and 5cm wide

There is no relationship between the perimeter and area of a rectangle. Knowing the perimeter, it's not possible to find the area. If you pick a number for the perimeter, there are an infinite number of rectangles with different areas that all have that perimeter. Knowing the area, it's not possible to find the perimeter. If you pick a number for the area, there are an infinite number of rectangles with different perimeters that all have that area.

by appying 2l+2w

the length of a rectangle is 5 more then the width. Find the perimeter and the area of the rectangle

To find the perimeter you add and to find the area we multiply.

Subtract two times the length from the perimeter and divide the remainder by two. This should be the width.

Length + width = half the perimeter, but more info eg area, is needed.

You cannot find the perimeter unless the rectangle is a regular rectangle (a square) in which case the perimeter is 4 times the square root of the area. With just the area the shape of the rectangle could be any number of shapes with different perimeter, for example, imagine 6 square units 1cm by 1cm arranged in a 1*6 configuration to give a long thin rectangle, the perimeter would be 6+6+1+1=14cm, the same 6 arranged in a 3*2 rectangle would have the same area, but a perimeter of 3+3+2+2=10cm, for this reason a rectangle's perimeter cannot be determined from the area alone.

Square is a special case of a rectangle and the same formula may be used to find the perimeter

To find the perimeter of a rectangle you must calculate the lengths of each of the sides and add them all together.

no

Type your answer here... give the dimensions of the rectangle with an are of 100 square units and whole number side lengths that has the largest perimeter and the smallest perimeter

First divide the perimeter by 2 then subtract the diagonal from this. The number left with must equal two numbers that when squared and added together equals the diagonal when squared (Pythagoras' theorem) These numbers will then be the length and height of the rectangle.

The perimeter of any 2D shape is the sum of all of the individual sides. For example: the perimeter of a rectangle is = length of rectangle (top) + length of rectangle (bottom) + height of rectangle (Left) + height of rectangle (Right)

The perimeter of a rectangle is the sum of its 4 sides added together.

The perimeter of a rectangle is given by:P = 2l + 2w, where P is the perimeter of the rectangle, l is the length of the rectangle, and w is the width of the rectangle.P = 2(15) + 2(10) = 50 meters.