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11-04-2018
Mathematics

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Find the square of the leg b of this right triangle: a=2b, c=10

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11-04-2018

a² + b² = c²

a = 2b, c = 10

(2b)² + b² = 10²

4b² + b² =100

5b² = 100

b² = 100 ÷ 5

b² = 20

Answer: 20

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