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Pythagorean theorem:

Usually revolves around the hypotenuse side of a triangle [The side opposite the right angle]. What you do is, You look at the length of all the sides.

If Side A [the hypotenuse] Is 8cm long, side B is 3 cm long and side C is 4 cm long. Then what you do is, use this rule.

A squared = B squared + c squared. Which basically means, get the lengths of the two sides that are NOt the hypotenuse. Square them. Add them together. Then square root your answer.

For example, the answer to: If Side A [the hypotenuse] Is 8cm long, side B is 3 cm long and side C is 4 cm long is:

8x8=64. 3x3=9. 64+9=53. Square route of 53 = 7.28 [rounded]

So basically, Square B and C, add them together, square root it to get the length of the hypotenuse

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