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A hollow cylindrical pipe is 21 dm long....

A hollow cylindrical pipe is 21 dm long. Its outer and inner diameters are 10 cm and 6 cm respectively. Find the volume of the copper used in making the pipe.

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RD SHARMA ENGLISH-MENSURATION-III (SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER)-All Questions
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  13. The ratio between the radius of the base and the height of a cylind...

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