ShapeCalcz is a specialized calculator that includes formulas for many common geometric shapes and figures. ShapeCalcz computes perimeter and area for eight different plane (2 dimensional) geometry shapes and computes volume, surface area, and where applicable lateral (side) surface area, for eight different solid (3 dimensional) geometric figures. ShapeCalcz is fast and easy to use. Select the calculation, enter the values for the parameters, and ShapeCalcz does the rest. ShapeCalcz computes the perimeter and area for these plane figures; Circle Rectangle Equilateral Triangle - has formulas for both known height and known side length. Right Triangle Oblique Triangle - this includes both obtuse and acute triangles. Pentagon Hexagon Octagon ShapeCalcz computes the surface area and volume for these solid figures; Sphere Parallelopiped ShapeCalcz computes the surface area, lateral (side) surface area, and volume for these solid figures; Cone - has formulas for both cone with known height and cone with known side length. Cylinder Prism In addition, ShapeCalcz has formulas to compute values for these common complex figures - often found in industrial applications; Pressure Vessel - cylindrical container with full spherical ends, commonly used in pressure applications. Storage Tank - parallelopiped combined with cylinder, commonly used for bulk liquid storage. Conical Hopper - cylinder with conical hopper bottom, commonly used for dry bulk st