Answer
$A = 1520$ cm$^{2}$
Work Step by Step
$A = \frac{1}{2}absin(C)$
$= (0.5)((50)(70)sin(60)$
by GDC / calculator
$= (0.5)3500sin(60)$
$= (0.5)(3031.088913)$
$= 1515.54...$ cm
$= 1520$ cm$^{2}$
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