Question

formula for the areas and perimeters of trapezium, perallogram, circle and quadrilateral

Answer 1

areas
trapezium=1/2 (a+b)×h
parallelogram=b×h
circle=πr square
perimeter

trapezium sum of all sides
parallelogram 2 (l+b)
circle 2πr

Answer 2

Areas

◆◆◆Trapezium --------------- 1/2 (a+b) h

●●●Parallelogram ----------------. b×h

◆◆◆Circle ---------------–--------. πr2

●●●Quadrilateral -----------------. 1/2 ( h1 + h2 )

Perimeter

◆◆◆Trapezium. --------------. a+b+c+d

●●●Parallelogram -----------. 2 ( l + b )

◆◆◆Circle. ------------------- 2πr

●●●Quadrilateral. -------------. Sum of the lengths of all the four sides AB+BC+CD+DA