MP = largeur x = b - 0,9

PL = longueur y = a

Placard mural de largeur 0,90 m

a = 4 (slider from 4 to 20, step 0.1)
b = 4.9 (slider from 4.9 to 20, step 0.1)
P = (0, 0)
L: (a, 0)
A: (a, b)
N: (0, b)
Pièce, p, l, a_1, n = Polygon(P, L, A, N)
f = Function(b - 0.9, 0, a)
M: (0, b - 0.9)
U: (a, b - 0.9)
Placard, n_1, m, u, a_2 = Polygon(N, M, U, A)
Textepoly1: "Aire " + (Name[P]) + "" + (Name[L]) + "" + (Name[A]) + "" + (Name[N]) + " = " + Pièce + ""