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The external and internal radii of a ho...

The external and internal radii of a hollow cylinder are 5 cm and 4 cm respectively. If the height of cylinder is 14 cm, then find its internal volume and total surface area.

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To solve the problem step by step, we will first calculate the internal volume of the hollow cylinder and then find its total surface area. ### Step 1: Identify the given values - Internal radius (r) = 4 cm - External radius (R) = 5 cm - Height (h) = 14 cm ### Step 2: Calculate the internal volume ...
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