?????????????? "altitude" ???????????...yu meen hite?????
trapazoid...area=hite*(base1+base2)/2....=40
base2=base1+3
hite=2*base1
area=2*base1*(base1+base1+3)/2....=base1*(base1+base1+3)
=base1*(2base1+3)...2base1^2+3base1=40
so yu have 2x^2+3x-40=0
quadratik equashun giv roots=3.784589287 & -5.284589287
hite=2*small base=2*3.784589287=7.569178
area=40, & 40/7.569178=5.2845897=averaej av 2 bases
1 base=5.2845897+1.5 & other=5.2845897-1.5