Odpowiedzi

2010-01-30T15:13:37+01:00
A = 13cm
h = 12cm
Obw = 36cm
b = 36cm - 2* 13 cm
b = 10cm

P = 1/2b * h
P = 1/2 * 10 * 12
P = 60cm²

Pzdr ;)
2010-01-30T15:20:44+01:00
B = 13cm
h = 12cm
Obwód = 36cm
a = 36cm - 2* 13 cm
a = 10cm

P= a×h÷2
P=10×12÷2=60 cm²
2010-01-30T17:22:26+01:00
A = 13cm
h = 12cm
Obw = 36cm
b = 36cm - 2* 13 cm
b = 10cm

P = 1/2b * h
P = 1/2 * 10 * 12
P = 60cm²