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Ten identical mementos is made by a scho...

Ten identical mementos is made by a school to awarding 10 students for first pize winners in games . If each memento is made as shown in figure (shaded portion) its base PQRS is silver plated from the front side at the rate of RS 20 per square cm . Find the total cost of the silver plating of 10 mements . (OR = 5 cm , RQ= 6 cm , PS = 8 cm )

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The correct Answer is:
Rs , 10,372
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