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 m and a tread of m (See figure) calculate the total volume of concrete required to build the terrace.
From the figure, it can be observed that
1st step is m wide,
2nd step is 1 m wide,
3rd step is m wide.
Therefore, the width of each step is incre...
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