??????????? "summounted bi" is "on top" ???????????
rektangel with semiserel on top
wide=6.7
rim-length=28
half rim-length av serkel=pi*radius=3.14159* 3.35
=10.52433538
other 3 sides=wide+2*length=(28-10.52433538)
=17.47566462
2*length=17.47566462-6.7=10.77566462
leng=half that=5.387832311
area=leng*wide + half area av serkel
leng*wide=6.7*5.387832311=36.09847649...part 1 av area
half serkel area=pi*r*r/2=3.14159265*3.35*3.35/2=17.62826176
area=36.098476+17.62826176
=53.72673825
round2(53......)=53.73