how to find the height of a rectangle

Rectangle Shape

Rectangle Diagram with l = length and w = width
a = length side a
b = length side b
p = q = diagonals
P = perimeter
A = surface area
√ = square root

Calculator Utilise

Use this calculator if y'all know 2 values for the rectangle, including ane side length, forth with surface area, perimeter or diagonals and you can calculate the other 3 rectangle variables. A square calculator is a special example of the rectangle where the lengths of a and b are equal.

Units: Notation that units of length are shown for convenience. They do not affect the calculations. The units are in place to give an indication of the lodge of the calculated results such as ft, ft² or ftⁱⁱⁱ. Whatsoever other base unit can be substituted.

Rectangle Formulas

Surface area of a rectangle:

A = ab

Perimeter of a rectangle:

P = 2a + 2b

Polygon diagonals of a rectangle:

p = q = √(a² + b²)

Rectangle Calculations

Summate A, P, p | Given a, b
Given sides lengths a and b summate surface area, perimeter and diagonals
- A = ab
- P = 2a + 2b
- p = q = √(a² + b^two)
Calculate P, p, b | Given A, a
Given area and side length a calculate perimeter, diagonals and side b
- b = A / a
- P = 2a + 2b
- p = q = √(a^two + b²)
Calculate P, p, a | Given A, b
Given surface area and side length b summate perimeter, diagonals and side a
- a = A / b
- P = 2a + 2b
- p = q = √(a^two + b²)
Calculate A, p, b | Given P, a
Given perimeter and side length a summate area, diagonals and side b
- b = (P - 2a) / two
- A = ab
- p = q = √(a² + b²)
Calculate A, p, a | Given P, b
Given perimeter and side length b calculate area, diagonals and side a
- a = (P - 2b) / 2
- A = ab
- p = q = √(a^two + b^two)
Calculate A, P, b | Given p, a
Given diagonals and side length a calculate area, perimeter and side b
- b = √(p^two - a²)
- A = ab
- P = 2a + 2b
Calculate A, P, a | Given p, b
Given diagonals and side length b summate area, perimeter and side a
- a = √(p² - b²)
- A = ab
- P = 2a + 2b