Question: Frandy was building a square pyramid. He started by placing 1 cube over 4 cubes.


For a 3-level pyramid. He used 9 cubes as the base.

If he continue building and used 169 cubes as the base, how many levels were there?

(1) 10 levels
(2) 11 levels
(3) 12 levels
(4) 13 levels

Workings: Square Root 169 = 13

Answer: (4)



:congrats: