Odpowiedzi

2009-12-13T20:04:16+01:00
Pp = 6 * 6 = 36
x² + 3² = 5²
x² + 9 = 25
x = 4
Pb = a * h / 2
Pb = 3*4/2=6
Pc = Pp + Pb
Pc = 36 + 4*6
Pc = 60 cm ²