Area:
1) Rectangle- A= l x w
Area of Rectangle= Length x Width
2) Traingle- A= Half x b x h
Area of Traingle= Half x base x vertical height
3) Parallelogram- A= b x h
Area of Parallelogram= base x vertical height
4) Trapezium- A= Half x ( a+b) x h
Area of Trapezium= average of parallel sides x distance between them
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