Question

Find the number of shot in an incomplete square pile of $16$ courses, having $12$ shot in each side of the top.

Answer 1

If we place on the given pile a square file having $11$ shots in each side of the base, we obtain a complete square pile of $27$ courses;

No. of shots in the complete pile

$=\frac{27\times 28\times 55}{6}=6930$

No. of shots in the added pile:-

$=\frac{11\times 12\times 23}{6}=506$

Therefore no. of shots in the incomplete pile

$=6930-506$

$=6424$