Odpowiedź :
A - 3dm
h - 3dm
B - 3 * 3 = 9dm
P=[tex]\frac{(A+B)*h}{2}[/tex]=12*3:2=6*3=18dm²
P = ½ * (a + b) * h
a = 3 dm
h = 3 dm
b = 3 * 3 dm = 9 dm
P = ½ * (3 + 9) * 3 = ½ * 12 * 3 = 18 dm²
A - 3dm
h - 3dm
B - 3 * 3 = 9dm
P=[tex]\frac{(A+B)*h}{2}[/tex]=12*3:2=6*3=18dm²
P = ½ * (a + b) * h
a = 3 dm
h = 3 dm
b = 3 * 3 dm = 9 dm
P = ½ * (3 + 9) * 3 = ½ * 12 * 3 = 18 dm²