Finding Areas of Shapes. Area of a Triangle Area of Triangle = 1 x Base x Vertical Height 2 Vertical Height Base Right Angle.

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Presentation transcript:

Finding Areas of Shapes

Area of a Triangle Area of Triangle = 1 x Base x Vertical Height 2 Vertical Height Base Right Angle

Area of Parallelogram Area of Parallelogram = Base x Vertical Height Base Vertical Height ( A Rhombus is a Parallelogram With Equal Sides )

Area of Trapezium Area of Trapezium = Average of Parallel Sides x Distance Between Them a b h Area = ½ (a + b) x h

Area of Circle Area = x r2r2 Diameter (D) Circumference = x D Radius (R) = D/2

Area of Sector Area of Sector of Angle X = X / 360 x Area of Circle

Summary Exam papers usually have area formulas You need practise to use them quickly and accurately In industry area formulas are used to calculate the quantity of materials needed e.g. paint Sometimes area formulas are used in algebra Exam papers usually have area formulas You need practise to use them quickly and accurately In industry area formulas are used to calculate the quantity of materials needed e.g. paint Sometimes area formulas are used in algebra