In a square of a side length s, what is the length of a diagonal?
1 answer:
S - length of a square
d - length of a diagonal
d = s√2
why?
Use the Pythagorean theorem:
d² = s² + s²
d² = 2s²
d = √(2s²)
d = √2 · √s²
d = s√2
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