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b- krótsza podstawa
a+b = 16,2 cm
h = 25% z 16,2 cm = (1/4)*16,2cm = 4,05 cm
P = ? - pole trapezu
P= [(a+b):2] *h
P = [16,2 cm :2 ]*4,05 cm
P = 8,1cm *4,05 cm
P = 32,805 cm²
25% z 16,2 to 4,05
Pole trapezu = 16,2/2 *4,05 = 32,805
P= jedna druga razy 16,2 razy 4,05
P=32,805 cm kwadratowych