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Find the side length of the third side

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the side length of the third side is 16

Step-by-step explanation:

The triangle is right angled. So we would apply pythagoras' theorem:

Hypotenuse² = opposite² + adjacent²

Hypotenuse = longest side = 20

adjacent = 12

opposite = ?

20² = opposite² + 12²

400 = opposite² + 144

400 - 144 = opposite²

opposite² = 256

opposite = √256

opposite = 16

Hence, the side length of the third side is 16

User Tyrrell
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