of I m long tube if the density of the metal be 7.8 gm/cm6. The radius & height of a cylinder are in the rati5:7 & its volume is 550 cm3. Find its radius.(Ď-22/7)nd the cost of plastering the inner curved surface at Rs 3 per square meter. A glass cylindetr& Ä°ts external radius is 9cm.. How many cubic meters of earth must be dugout to sink a well 22.5 m deep & of diameter 7m?with diameter 20cm has water to a height of 9 cm.1.

of I m long tube if the density of the metal be 7.8 gm/cm6. The radius

1.	of I m long tube if the density of the metal be 7.8 gm/cm6. The radius & height of a cylinder are in the rati5:7 & its volume is 550 cm3. Find its radius.(Ď-22/7)nd the cost of plastering the inner curved surface at Rs 3 per square meter. A glass cylindetr& Ä°ts external radius is 9cm.. How many cubic meters of earth must be dugout to sink a well 22.5 m deep & of diameter 7m?with diameter 20cm has water to a height of 9 cm.1.
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