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In the middle of a rectangular field measuring `30 mxx20 m` , a well of 7 m diameter and 10 m depth is dug. The earth so removed is evenly spread over the remaining part of the field. Find the height through which the level of the field is raised.

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RD SHARMA ENGLISH-MENSURATION-III (SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER)-All Questions
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  17. A well with 10m inside diameter is dug 8.4m deep. Earth taken out o...

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  18. A hollow garden roller, 63cm wide with a girth of 440 cm, is made o...

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