Answer:
h = 6
Step-by-step explanation:
A = 1/2h (B + b), where A = 27, B = 2, and b = 7.
27 = 1/2h (2 + 7)
Let's switch sides for our convenience.
1/2h (2 + 7) = 27
×2 ×2
-------------------------
9h = 54
/9 /9
yes
b+B=2+7=9
A=9h/2
2A=9h
2*27=54=9h
h=54/9=6
h=6
