буду очень благодарен(от )

1.

a=float(input("a = "))

b=float(input("b = "))

l=float(input("l = "))

print("n =",a*b/l*100)

2.

a=int(input("a = "))

b=int(input("b = "))

print ("%.f" % ((a+b)/2*3)**2,";",a**3-b**3)

3.

xa=int(input("xa = "))

ya=int(input("ya = "))

xb=int(input("xb = "))

yb=int(input("yb = "))

print ("xc =","%3d" % xb,"   yc =",xb-xa+yb)

print ("xd =","%3d" % xa,"   yd =",xb-xa+ya)