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A game of Coin ...

Geometry Level 1

The no. coins,each of radius = 0.75 cm and thickness = 0.2 cm , to be melted to make a right circular cylinder of height 8 cm and radius 3 cm , is .......

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

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including olympiad champions, researchers, and professionals.

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by Puneet Sharma

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