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Rectangle calculator

An online calculator that calculates the side, area, perimeter and diagonal of a rectangle if you enter two known values. Step-by-step explanations for each combination of input parameters are provided.

Rectangle Calculator
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Enter known values:
side a =
side b =
area A =
perimeter P =
diagonal d =

Select value to find:
side a
side b
area A
perimeter P
diagonal d
Show me an explanation
example 1:
Find the area of the rectangle whose sides are $14cm$ and $31 cm$.
example 2:
Finding the area of a rectangle whose diagonal is $9 cm$ and one side is $5 cm$.
example 3:
The area of a rectangle is $56 cm^2$ and one side is $6 cm$. Find perimeter.

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