# math

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what is the length of a diagonal of a rectangular picture whose sides are 3 inches by 4 inches

• math -

a^2 + b^2 = c^2

3^2 + 4^2 = c^2

9 + 16 = c^2

5 = c

• math -

3 4 5 right triangle
3^2 + 4^2 = 25 = 5^2

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