P = a · b · sinα
a = 6,4 cm
b = 4,5 cm
α = 60°
P = 6,4 cm · 4,5 cm · sin60°
P = 28,8 cm² · √3/2
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Verified answer
P = a · b · sinα
a = 6,4 cm
b = 4,5 cm
α = 60°
P = 6,4 cm · 4,5 cm · sin60°
P = 28,8 cm² · √3/2
P = 14,4√3 cm²