A geometry problem by Daniel the marble racer

Geometry Level pending

Find X and Y and multiply them


The answer is 7800.

Daniel The Marble Racer by Daniel the marble racer , 14, South Korea

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1 solution

X = 180 ° − 120 ° = 60 ° , Y = 180 ° − ( 120 ° − 70 ° ) = 130 ° X=180\degree-120\degree=60\degree, Y=180\degree-(120\degree-70\degree)=130\degree . Therefore X Y = 60 × 130 = 7800 XY=60\times 130=\boxed {7800} . (Unit is omitted, which is degree 2 ^2 ).

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