This document provides information about plane (2D) and 3D figures, including their definitions, examples, and formulas to calculate their areas and volumes. Plane figures are flat shapes that can be made of straight lines, curved lines, or both. 3D figures have height, depth and width and do not lie entirely in a plane. Examples of plane figures include squares, rectangles, trapezoids and circles, while 3D figures include cubes, cuboids, cylinders, cones, spheres and hemispheres. Formulas are given to calculate the areas of common plane shapes like squares, rectangles, triangles and circles, as well as the volumes and surface areas of various 3D solids.

2. EXAMPLE OF PLANE AND
3D FIGURES
PLANE FIGURES 3D FIGURES
SQUARE CUBE
RECTANGLE CUBOID
TRAPEZIUM CYLINDER
HEXAGON CONE
OCTAGON SPEHERE
PENTAGON HEMISPHERE
CIRCLE PRISM

3. WHAT ARE 2D OR PLANE FIGURES
?
Plane figures are flat two- dimensional
(2D) shape. A plane figure can be made of
straight lines, curved lines, or both straigh
and curved lines.

4. WHAT ARE 3D FIGURES ?
A 3D figure is a figure that has height,
depth, and width. Such a figure does not
lie entirely in a plane.

5. AREA OF 2D FIGURES

6. AREA OF SQUARE
The Area is the side
Area of a Square = length squared:
Area = a2

7. Parallelogram
The Area is
Area of a Parallelogram = the base times
the height:
Area = b ×
h
(h is at right
angles to b)

8. Triangles
The area is half of the base times
height.
•"b" is the distance along the base
•"h" is the height (measured at right
angles to the base)
Area = ½ × b × h

9. Rectangle
The Area is
Area of a the width times
Rectangle = the height:
Area = w × h

10. The area of a circle is
• π (Pi) times the Radius squared, which is written:
A = π × r2

12. VOLUME AND SURFACE AREA OF CUBE

13. VOLUME AND SURFACE OF CUBOID
VOLUME OF CUBOID = L*B*H
T.S.A OF CUBOID =2∏r(r+h)
C.S.A OF A CUBOID =2∏rh

14. VOLUME AND SURFACE OF
cylinder

15. VOLUME AND SURFACE OF RIGHT
CIRCULAR CONE

16. VOLUME SURFACE OF SPEHERE

17. VOLUME AND SURFACE OF
HEMISPEHERE

18. GROUP MEMBERS NAME