Q10 of 20 Page 225

A one side open cylinderical drum has inner radius 28 cm. and height 2.1 m. How much water you can store in the drum. Express in litres. (1 litre = 1000 cc.)

Given, r = 28cm

h = 2.1m = 210cm


to find the capacity of water ,the volume of the cylinder = πr2h


= 3.14 × 282 × 210


= 516969.6cm3


1litere = 1000cm3


Hence, the water stored = = 516.9literes


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