-13- The radius of a solid right circular cylinderndecreases by 20- - - and is haight increases byn10- - - - Find the percentage change is its -n- begin-array- - l l l l - - text - -i- - - - - text - volume - - - - text - -ii- curved surface area - - end-array- -

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"13. The radius of a solid right circular cylinder\ndecreases by 20\\( \\$ \\) and is haight increases by\n10\\( \\% \\) . Find the percentage change is its :\n\\( \\begin{array} { l l l l } { \\text { (i) } } & { \\text { volume } } & { \\text { (ii) curved surface area } } \\end{array} \\)"