Question 155253
H=B+6
A=BH/2
13.5=B(B+6)/2
13.5=(B^2+6B)/2
2*13.5=B^2+6B
B^2+6B-27=0
(B+9)(B-3)=0
B-3=0
B=3 FOR THE BASE
3+6=9 FOR THE HEIGHT.
PROOF:
13.5=(3*9)/2
13.5=27/2
13.5=13.5