Question

find the area of given irregular octagon ABCDEFGH.​

Answer 1

AP=4 cm

All sides =5 cm

HC=GD=11 cm

Area of trapezium ABCH

=Area of trapezium GDEF

Area of a trapezium =

2/1

(a+b)h

=32 cm ^2

So Area of trapezium GDEF=32 cm ^2

Area of rectangle MCDG=l×b=11×5=58 cm ^2

Area of Octagon = Area of two trapezium + Area of rectangle

22×32+55

=64+55=119 cm^2

solution