x+y = 14
xy = 40
x = 14-y
14y-y^2 -40 = 0
y^2 -14y +40 =0
y = 4 y =10
x = 10 x = 4
ответ 4 см, 10 см
x+y = 14
xy = 40
x = 14-y
14y-y^2 -40 = 0
y^2 -14y +40 =0
y = 4 y =10
x = 10 x = 4
ответ 4 см, 10 см