Answer:
2 ⋅ A /h - a = b
Explanation:
Multiplying by 2 :
2 A = h ( a + b )
dividing by h
2 A /h = a + b
substracting a
2 ⋅ A /h − a = b
b=2A/h-a
Step-by-step explanation:
A=1/2h(a+b)
Multiplying by 2
2A=h(a+b)
Dividing by h
2A/h=a+b
Subtracting a
2A/h-a =b
94m^2
89.1mm^2
16
