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h=14cm
b=14:2=7 cm
P=(a+b):2 * h
P=(14+7):2*14
P=21:2*14
P=10,5*14
P=147 cm²
a=14
b=7
Ptrapezu= ½* (a+b) *h
Pole= ½* (14 +7) * 14
Pole= ½* 21 * 14=
= 147 cm²