Area Perimeter Calculator

This is a handy calculator, very easy to use, that calculates the Areas (and in some cases the Perimeter) of 8 most common plane shapes.

Just enter the values in the middle column of the table and without pressing any buttons - you'll get the answers in the column on the right hand side.

Square	a =	P = = 4a  A = = a2
Rectangle	a =  b =	P = =  2 (a+b)  A = = ab
Triangle	a =  h =	P = a+b+c  A = = ah/2
Circle	r =	C = = 2rπ  A = = r2π
Parallelogram	a =  h =	P = 2 (a+b)  A = = ah
Trapezoid	a =  b =  h =	P = a+b+c+d  A = = (a+b)h/2
Ellipse	a =  b =	A = = πab
Circle Sector	r =  θ =	θ = [rad]  A = = r2θ/2

calculator by agilepman