Answer :

apologiabiology
base=legnth

perimiter=width+width+height+height or
p=2legnth+2h

so if p=132.8
and base legnth=legnth=l=60.2 then
subsitute
132.8=2(60.2)+2h
132.8=120.4+2h
subtract 120.4 from both sides
12.4=2h
divide by 2
6.2=h

the height is 6.2mm