MATHS PROJECT WORK

EXAMPLE OF PLANE AND 3D FIGURES

PLANE FIGURES 3D FIGURES

SQUARE CUBE

RECTANGLE CUBOID

TRAPEZIUM CYLINDER

HEXAGON CONE

OCTAGON SPEHERE

PENTAGON HEMISPHERE

CIRCLE PRISM

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 straight and curved lines.

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.

AREA OF 2D FIGURES

AREA OF SQUARE

The Area is the side

length squared: Area = a2 

Area of a Square =                

Parallelogram

The Area is the base times

the height:Area = b ×

h(h is at right angles to b)

Area of a Parallelogram =

               

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

                             

Rectangle

Area of a Rectangle =

The Area is the width times

the height:Area = w × h

• π (Pi) times the Radius squared, which is written: A = π × r2

The area of a circle is

3D FIGURES

VOLUME AND SURFACE AREA OF CUBE

VOLUME OF CUBE = DIAGONAL OF A CUBE =T.S.A OF CUBE = 6 C.S.A OF A CUBE = 4

VOLUME AND SURFACE OF CUBOID

VOLUME OF CUBOID = L*B*HT.S.A OF CUBOID =2∏r(r+h)C.S.A OF A CUBOID =2∏rh

VOLUME AND SURFACE OF cylinder

VOLUME OF cylinder = ∏ T.S.A OF cylinder =2C.S.A OF A cylinder = 2

VOLUME AND SURFACE OF RIGHT CIRCULAR CONE

VOLUME OF CONE = C.S.A OF A CONE =

T.S.A OF CONE =

VOLUME SURFACE OF SPEHERE

VOLUME OF SPEHERE = S.A OF A SPEHERE =VOLUME OF SPERICAL SHELL = ; -)

VOLUME AND SURFACE OF HEMISPEHERE

VOLUME OF HEMISPEHERE = T.S.A OF A HEMISPEHERE = 3

C.S.A. OF HEMISPERE = 2

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