RĂ©ponse :
Explications Ă©tape par Ă©tape
Bonsoir
Aire du triangle :
A = base x hauteur / 2
A = AC x AB / 2
A = V12 x V27 / 2
A = V(2^2 x 3) x V(3^2 x 3)
A = 2V3 x 3V3
A = 2 x 3 x (V3)^2
A = 6 x 3
A = 18
V432 = V(4^2 x 3^3)
V432 = 4 x 3V3
V432 = 12V3
V126 = V(3^2 x 2 x 7)
V126 = 3V(2 x 7)
V126 = 3V14
V42 = V(2 x 3 x 7)
V42 = V42
V7350 = V(2 x 5^2 x 3 x 7^2)
V7350 = 5 x 7 x V(2 x 3)
V7350 = 35V6
