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Podstawy - 5cm i 8,5cm
Wysokość - (5+8,5)*2/5=5,4cm
P=a+b/2*h
P=5+8,5/2*5,4=6,75*5,4=36,45cm2
13,5cmx2/5=5,4cm
P=(5cm+8,5cm)x5,4cm/2=36,45cm²
Liczę na naj!.****
5+8,5=13,5
2/5 = 4/10
h=13,5 x 4/10 = 13,5 x 4 (nad 10) = 54/10 = 5,4 cm
p=½ x (5+8,5) x 5,4 cm = ½ x 13,5 x 5,4 = 13,5 x 2,7 = 36,45 cm ²
Odp.: Pole trapezu wynosi 36,45 cm²