#1070 · Algebra · Sequences & series

Find length from rectangular pyramid total

A complete rectangular pyramid contains 24 395 balls. If the breadth of the base is 34 balls, determine the length of the base.

~4 minAnswer checked instantlyrectangular pyramidal numberssolving for dimension

H. S. Hall & S. R. Knight, Higher Algebra (1891) · Ch. VI. Harmonical Progression, Examples VI.b, No. 6

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Checked against the answer in H. S. Hall & S. R. Knight, Higher Algebra (1891).