How many cubic metres of earth must b...

How many cubic metres of earth must be dug out to sink a well 22.5m deep and of diameter 7m? Also, find the cost of plastering the inner curved surface at Rs. 3 per square metre.

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RD SHARMA ENGLISH-MENSURATION-III (SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER)-All Questions

A well with 10 m diameter is dug 14 m deep. Earth taken out of it is s...
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A circular well of radius 3.5m is dug 20m deep and the earth so dug ...
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How many cubic metres of earth must be dug out to sink a well 22.5m...
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