Area by subtraction (shaded regions), 4-point ladder

Two steps, or one step plus a trap.

3 in a row to finish this ladder.

0/1 solved

KA-0027

about 60s

A square of side 10 has a smaller square of side 4 cut out of one corner. What is the area of the shape that remains?

Text description of the figure

A large square of side 10 with a smaller square of side 4 removed from its top-right corner, leaving an L-shaped region shaded.

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