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Masteriza [31]
2 years ago
10

Please help with this !

Mathematics
2 answers:
Sedaia [141]2 years ago
8 0

Answer:

16 m

Step-by-step explanation:

12² + b² = 20²

I hope this helps!

Firlakuza [10]2 years ago
7 0

Answer:

b = 16 m

Step-by-step explanation:

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

b² + 12² = 20²

b² + 144 = 400 ( subtract 144 from both sides )

b² = 256 ( take square root of both sides )

b = \sqrt{256} = 16 m

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