# Solution: Find the total number of spheres piled

Spheres of the same radius are piled in the form of a pyramid with a square base until there is just one sphere at the top layer. If there are 4 spheres on each side of the square, find the total number of spheres in the pile.

#### Problem Statement:

Spheres of the same radius are piled in the form of a pyramid with a square base until there is just one sphere at the top layer. If there are 4 spheres on each side of the square, find the total number of spheres in the pile.

There are total of 30 spheres in the pile.

Solution:

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