I present you the new Geometry Helper. It is A Great app help you solve geometry problems and also A Perfect Assistant to Your Geometry Homework!
Providing Access To All Basic and Complex Geometry Shapes. A Perfect Helper To Calculating Area, Volume, Surface Area, Curve Length, etc.
Right Now It Supports
Plan/2D: Square, Rectangular, Triangle, Parallelogram, Quadrangle, Circle, Diamond, etc.
3D: Cube, Cuboid, Triangular Prism, Cone, Frustum, Hollow Cylinder, Oblique Cylinder, etc.
https://market.android.com/details?id=com.sddyshou.GeometryHelp