A) Rs 276
B) Rs 280
C) Rs 284
D) Rs 370
Correct Answer: D
Solution :
Cost of golden plating = (cost per unit) \[\times \] (Area of golden plated region) Area of golden plated region = Area of \[\Delta OPQ\]- area of sector OSRO. \[=420.5-346.5=74\,c{{m}^{2}}\] \[\therefore \]Cost =\[5\times 74=370\]
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