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Pt=½*(a+b)*h
Pt=½*(8+3)*5
Pt=(11*5) /2
Pt=55/2
Pt=27,5jednostek²
druga to trapez prostokątny
Pt=½*(a+b)*h
Pt=½*(8+6)*3
Pt=7*3
Pt=21jednostek kwadratowych
a=5-(-3)=8
b=1-(-2)=3
h=4-(-1)=5
P=(a+b)*5/2
P=(8+3)*5/2=27,5
b)
a=4-(-2)=6
b=6-2=4
h=2-(-1)=3
P=(6+4)*3/2=5*3=15