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### Question Asked by a Student from EXXAMM.com Team

** Q 2949391213. ** A small terrace at a football ground comprises of 15 steps each of which is 50 m long and built of solid concrete.

Each step has a rise of ` \frac { 1 }{ 4 }m` and a tread of `\frac { 1 }{ 2 }m`. (see Fig.). Calculate the total volume of concrete required to build the terrace.