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The external diameter of a gold - sphere...

The external diameter of a gold - sphere is 12 cm and it is made of a gold - plate of thichness 1 cm. If the weight of 1 cc gold be `19*5` gm and the price of 1 gm gold is ₹ 1280, then find the total price of the gold - sphere.

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CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
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  17. The external diameter of a gold - sphere is 12 cm and it is made of a ...

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  18. If x1 and x2be any two positive variables and if the arithmetic mean ...

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