Hej!
Obliczam pole trapezu :
P = ¹/₂ * (a + b) * h
a = 4 dm + 2 dm = 6 dm
b = 4 dm
h = 3 dm
P = ¹/₂ * (6 dm + 4 dm) * 3 dm
P = ¹/₂ * 10 dm * 3 dm
P = ¹/₂ * 30 dm²
P = 15 dm²
Obliczam pole rombu :
P = ¹/₂ * e * f
e = 3 dm
f = 4 dm
P = ¹/₂ * 3 dm * 4 dm
P = ¹/₂ * 12 dm²
P = 6 dm²
Obliczam pole zamalowanej figury :
P = 15 dm² - 6 dm²
P = 9 dm²
Pozdrawiam! - Julka
