Question
If the volume of a cylinder is 180Ď€ and the ratio of
radius to its height is 6:5 then find the curved surface area of cylinder?Solution
Volume of cylinder = 180Ď€ ⇒ Ď€r2h = 180Ď€ ⇒ r2h = 180 units ⇒ 36x2*5x = 180 units ⇒ x3 = 1 ⇒ x = 1 Radius = 6 units & height = 5 units. Curved surface area = 2Ď€rh Curved surface area = 60Ď€ unit ² Â
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