20/2*(54+46)/2=500
20/(2*54)+46/2=13,36
20/(2*54+46)/2=0,064
((20/2*54)+46)/2=1103
(20/2*54+46)/2=293
20/(2*54+46/2)
20/(2*54+46)/2
20/2*(54+46)/2=500
20/(2*54)+46/2=13,36
20/(2*54+46)/2=0,064
((20/2*54)+46)/2=1103
(20/2*54+46)/2=293
20/(2*54+46/2)
20/(2*54+46)/2
20/2*(54+46)/2=500