what is the formula to find out the perimeter of the rectangle when the area is given?

Answer 1

Perimeter formula for a rectangle

P = 2L + 2W

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Area formula for a rectangle

A + L x W

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Answer 2

First off, the formula of a rectangle is

A = LW

When the area is given, then you have an infinite amount of possibilities for L and W. If you're given the area, AND either the length or the width, then you can find the missing variable.

For instance, if you wanted L, then the formula is

L = A/W

And if you wanted W, then the formula is

W = A/L

Answer 3

Impossible giving only the perimeter to have the area suppose x is the length y the width , area is xy =A

there are 2 unknowns x and y for 1 equation It is undetermined

Answer 4

the place it comprises rectangles, the sq. constantly supplies the optimal section (75ft x 75ft). you could practice this utilising calculus (the optimal factor whilst plotting section against width is 5626ft section for 75ft width, so length could additionally be 75ft via subtraction and branch of perimeter) like so: Perimeter P = 2 * length L + 2 * Width W P = 2L + 2W 2L = P - 2W L = P/2 - W L = a hundred and fifty - W consequently section A = length L * Width W A = LW A = W (a hundred and fifty - W) A = -W^2 + 150W the optimal factor in this curve could be discovered via taking the 1st spinoff: dA/dW = -2W + a hundred and fifty it fairly is 0 whilst a hundred and fifty = 2W seventy 5 = W all of us understand this could be a optimal factor because of the fact the 2nd spinoff is -2 for the era of, so there are not any minimum factors.

Answer 5

perimeter of a rectangle is 2(LxW)
you have to have both L and W to calculate the perimeter, but by having the area you only have the ratio of L to W.
so you cant find out the perimeter. in fact there is infinie number of rectangles having that area with different perimeters.

Answer 6

x= length
y= width

perimeter= 2(area/ x + area/y)

Not enough given. Either the length or width should be given together with the area. Because for example if you know the length. The width would be Area/length.
you could now apply the formula above.

Answer 7

Not enough information Area =length*height
You can't calculate Perimeter =2(length+height)

Answer 8

Let length of retangle = x
Let width of rectangle = y
Let Area = A
Perimeter = 2x + 2y

xy=A
x=A/y or y=A/x

therefore, perimeter= 2(A/y) + 2y or 2x+2(A/x)

Answer 9

AREA IS AB, PERIMETER IS 2A+2B, so you have to give lenghth of one side, otherwise for the same area you can arrive at different perimeters.