def b():
dulj=float(textbox1.get())
šir=float(textbox2.get())
vis=float(textbox3.get())
vol=round(dulj*šir*vis,2)
rez = Label(a,text =
rez.place(x = 350, y=350)
#/////////////////////////////////////////////////
#labels
#1.
ispis = Label(a, text =
,
ispis.place(x =50, y=50)
#2.
ispis = Label(a, text =
,
ispis.place(x =50, y=100)
#3.
ispis = Label(a, text =
,
ispis.place(x =50, y=150)
#4.
ispis = Label(a, text =
,
ispis.place(x =50, y=200)
#entrys:
#1
textbox1 = Entry(a,width=12)
textbox1.place(x =200, y=50)
#2
textbox2 = Entry(a,width=12)
textbox2.place(x =200, y=100)
#3
textbox3 = Entry(a,width=12)
textbox3.place(x =200, y=150)
#GUMB
#1
gumb2.place(x=180,y=300,width=120)