Se cunoaste trapezul isoscel abcd in care baza mica cd=14cm ad=bc=30 cm si baza mare ab = 50 cm. Arata ca ac perpendiculara pe cb.

Răspuns:
date:
bc-14cm
cd-30cm
ba-50 cm
ad-30cm
P=?
p=14cm+30cm+50cm+30cm
p=44+80
p=124