Question 1003851
b=base
2h=b-2
h=(b-2)/2
A=(1/2)bh
=b*(b-2)/4=30
(b^2-2b)/4=30
b^2-2b=120
b^2-2b-120=0
(b-12)(b+10)=0
b=12 in
h=5 in
A=(1/2)bh=(1/2)*60=30 in^2