Best Answer

You need to solve the two equations

P = perimeter

A = area

B = width

H = height

P = 2B + 2H

A = BH

H = A/B

P = 2B + 2A/B

P = (2B^2 + 2A)/B

2B^2 -PB +2A = 0

use quadratic formula

B = (P +/- SQRT(P^2-16A))/4

ONE ROOT IS B, the other is H

Q: How do you find the width of a rectangle given perimeter and area?

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Multiply length by width

156 It is impossible to calculate the area of a rectangle from its perimeter if no other dimension is known. The area of a rectangle is the product of its length and width, and the perimeter is twice the sum of its length and width.

you need length and width length multiply width = area length + length + width + width = perimeter

perimeter is the measure around the figure; area is the measure within the figure formula: perimeter: length+length+width+width=perimeter (for square or rectangle) area: length times width= area ( for square or rectangle)

By forming a quadratic equation from the information given and then the length and width can be found by solving the equation.

Related questions

Multiply length by width

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

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

156 It is impossible to calculate the area of a rectangle from its perimeter if no other dimension is known. The area of a rectangle is the product of its length and width, and the perimeter is twice the sum of its length and width.

you need length and width length multiply width = area length + length + width + width = perimeter

The perimeter of a rectangle is the distance around the rectangle. The area of a rectangle is the space inside the rectangle. To calculate either one you need the length and the width of the rectangle. To calculate the area multiply the length times the width. To calculate the perimeter add the length+width+length+width (that is the distance all the way around)

perimeter is the measure around the figure; area is the measure within the figure formula: perimeter: length+length+width+width=perimeter (for square or rectangle) area: length times width= area ( for square or rectangle)

By forming a quadratic equation from the information given and then the length and width can be found by solving the equation.

It not possible you nit witt that is not true length x width = area If you know length and area, solve width width = area / length then 2 x length + 2 x width = perimeter

perimeter, area =35.0,66.0 , Travis Garner Rocks!

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

18cm is the area and perimeter. the width is 3cm.