PowerPoint Presentation

MATHS PROJECT WORK

EXAMPLE OF PLANE AND 3D FIGURES

PLANE FIGURES3D FIGURESSQUARECUBERECTANGLECUBOIDTRAPEZIUMCYLINDERHEXAGONCONE OCTAGONSPEHERE PENTAGONHEMISPHERECIRCLEPRISM

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

WHAT ARE 3D FIGURES ?A3D figureis a figure that has height, depth, and width. Such a figure does not lie entirely in a plane.

AREA OF 2D FIGURES

AREA OF SQUAREThe Area is theside length squared: Area = a2

Area of a Square =

Parallelogram

The Area is thebase times the height:Area = b h(his at right angles tob)

Area of aParallelogram =

TrianglesThe area ishalf of the base times height."b" is the distance along the base"h" is the height (measured at right angles to the base)Area = b h

Rectangle

Area of a Rectangle=The Area is thewidthtimes theheight:Area = w h

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

The area of a circle is

3D FIGURES

11

VOLUME AND SURFACE AREA OF CUBE

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

VOLUME AND SURFACE OF cylinder

VOLUME AND SURFACE OF RIGHT CIRCULAR CONE

VOLUME SURFACE OF SPEHERE

VOLUME AND SURFACE OF HEMISPEHERE

GROUP MEMBERS NAME

ANSHULI 9308 SMITA 9343