Odpowiedzi

2010-03-27T19:53:43+01:00
P trap = (a + b) x h : 2
a = 8 m
b = 5 m
h = 4,2 m
P = (8m +5m) x 4,2 m :2 = 13 m x4,2 m :2 = 54,6 m : 2 = 27, 3 cm²
62 4 62
2010-03-27T19:55:31+01:00
P=(a+b):2*h
a=8m
b=5m
h=4,2m
P=(8m+5m):2*4,2m
P=13m:2*4,2m
P=6,5m*4,2m
P=27,3m²
odp.pole trapezu wynosi 27,3m²
42 4 42
2010-03-27T19:57:01+01:00
P=([a+b]×h)÷2
P=([8m+5m]×4,2m)÷2
p=(13m×4,2m)÷2
P=54,6m²×2=27,3m²
26 3 26