3 ms·
For those of us too lazy to think this through, do you care to post an explanation?
by woofie11 6y ago
For those of us too lazy to think this through, do you care to post an explanation?
- krick 6y agoSure, here you go. a — height of a white tile b — width of a white tile a x b — S₁, area of a white tile (this is what we are trying to "find") (a - b)² — S₀, area of a black square (a + b)² — S, area of a whole block (4 white tiles, 1 black tile) Now, looking at the image it is obvious, that (S - S₀) = 4S₁.