A = ½⋅c⋅g
A = ½⋅c⋅e
A = ½(g+e)⋅c
A = ½⋅b⋅e
A = ½½⋅b+e
A = ½⋅t⋅e⋅b
A = ½(b + t)⋅j
A = ½(b + t)⋅e
A = ½(a+p)⋅j
A = (t + b)⋅½⋅e
