How Big Is 60cm

wg is 60cm x 90cm? 3

How big is a poster for a common man?

More or less half human. The width is the same, but the height is half. 24 x 36 inches if you are familiar with the royal system :)

How Big Is 60cm

Size 24 x 36 x 24 inches wide x 36 inches long
1/4 times your port KG.
90 cm equals 0.9 m or about 2.95 ft.
60 cm equals 0.6 m or 1.97 ft.
Of which, if you compare it to a normal door (3 x 6.6667 feet), its height is a little less than half and its width is about 2/3.