Question

"(b) The interior of a building is in the form of cylinder of base radius 12\\( \\mathrm { m } \\) and height 3.5\\( \\mathrm { m } \\) surmounted by a cone of\nequal base and slant height 13\\( \\mathrm { m } \\) . Find the internal curved surved area of the building.\n(c) Using the properties of proportion, solve: \\( \\frac { 1 + x + x ^ { 2 } } { 1 - x + x ^ { 2 } } = \\frac { 49 } { 63 } \\left( \\frac { 1 + x } { 1 - x } \\right) . \\)"

Answer 1