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d2 = 19 - 5 = 14
P = 1/2 * d1 * d2 = 1/2 * 19 * 14 = 19 * 7 = 133
d1 = 12
d2 = 16
P = 1/2 * 12 * 16 = 6 * 16 = 96
P = a * h => a = P / h = 96 / 9,6 = 10
d1=19cm
d2=19cm-5cm=14cm
pole=14cm x 19cm:2=133cm kwadratowych
Zad2
Pole=12cm x 16cm:2=96cm kwadratowe
bok rombu=96cm kwadratowe:9,6cm=10cm
f=19-5=14cm
p=e*f/2
p=19*14/2
p=266/2
p=133cm2
zadanie2
p=e*f/2
p=12*16/2
p=192/2
p=96cm2
p=a*h
96cm2=a*9,6cm/2
96cm=a*4,8cm
a=96/4,8=2ocm