Odpowiedzi

2010-04-12T18:24:11+02:00
A = 5cm x -razy=mnozenie
h = ?
P = 276cm
V = ?
P = 2 x (a x a) + 4 x (a x h)
276 = 2 x (5 x 5) + 4 x (5 x h)
276 = 50 + 20 x h
20 x h = 276 - 50
20 x h = 226
h = 226 : 20
h = 11.3
V = a x a x h
V = 5 x 5 x 11 .3
V = 25 x 11.3
V = 282.5 cm (szesciennych)