100 Day Summer Challenge

100 problems in 100 days. #100problems

Day 39

39 of 100: Stairway to Puzzlement

Geometry Level 2

A unit cube with side lengths of 1 is cut into cuboids as shown, with the pieces placed adjacent to form a staircase. The total surface area of the original unit cube is 6. What is the total surface area of the new figure?

There's a clever approach to keep down the number of calculations you need.

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