Odpowiedzi

2010-03-07T12:31:58+01:00
H = 12m
a = 0,4*h = 4.8m

P = 1/2 * a * h = 1/2 * 12 * 4.8 = 28.8 m^2
2010-03-07T12:33:09+01:00
A-podstawa
a=12*0,4=4,8m
P=½*a*h=½*4,8*12=28,8m²