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Area turns out to be that quantity which helps to express extent of a 2 – D figure or for that matter the shape or a planar lamina in the plane. There is another term related to area & it is known as surface area which is nothing but the area of the boundary surface.
Surface Area Calculator
Formulae required for an area calculator


 Area of a circle is:
\(A=\pi r^{2}\)  Area of a rectangle is:
\(A=wl \) where l is the length & w is the width  Area of a triangle is :
\(A=\frac{h_{b}b}{2}\) where b is the base & \(h_{{b}}\) is the height  Area of a trapezoid is:
\(A=\frac{a+b}{2}h\) where a & b are the base while h is the height  Total area of a sector is:
\(\frac{1}{{2}}(\frac{\theta}{\pi}) r^{2}\) here r is the radius & angle is denoted by \(\theta\)  Area of a parallelogram is:
\(A=bh\)where b is the base & h is the height  Area of a square is:
\(A= a^{2} \quad where \quad a \quad is \quad the\quad side \)  Area of a polygon is:
\(A=\frac{n}{4} s^{2}.cot(\frac{\pi}{n})\)where n is thenumber of sides & s is the length of the side (each one)  Area of an ellipse is:
\(A=\pi\)a b and here, a & baretheAxis  Area of a rhombus is:
\(A=\frac{p\quad q}{2}\)where p & are the diagonal  Area of a regular hexagon is:
\(A=\frac{\sqrt[3]{3}}{2} a^{2} \quad where \quad a \quad is \quad the \quad side\)  Area of an octagon is:
\(A=2(1+\sqrt{2}) a^{2} \quad where \quad a \quad is \quad the \quad side\)
 Area of a circle is:

How to use an area calculator?
To make use of the area calculator on this site, the user has to enter the values that are available in the respective fields & click on calculate.