Odpowiedzi

2010-03-17T17:38:22+01:00

V = 1/2(a+b)h
b=a+5cm

18 = 1/2(2a+5) x 3
18 = 3a+7,5
3a = 10,5
a = 3,5 [cm]
b = 8,5 [cm]