The diagonal of the rectangle is 20, the length of one side is 12. Find the length of the second side.
| December 13, 2020 | education
You can apply the Pythagorean theorem, where the legs are the sides of the rectangle, and the hypotenuse is the diagonal.
a² + b² = c², b² = c²-a²
b² = 20²-12² = 400-144 = 256
b = √256 = 16
Answer: 16
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