Determine the interior angles of a rhombus with area 319.1 cm2 and perimeter 72 cm.

Correct answer:

α =  80 °
β =  100 °
γ =  80 °
δ =  100 °

Step-by-step explanation:

a=72/4=18 cm S=a2sinα  α=arcsin(319.1182)=80

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