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satela [25.4K]
3 years ago
9

Find the length of the unknown side. Round your answer to the nearest tenth.

Mathematics
1 answer:
dolphi86 [110]3 years ago
3 0
17.5

Explanation:

So if we use the formula a^2+b^2=c^2

We would fill it in as 4^2+b^2=18^2
Then solve

16+b^2= 324

Then subtract 16 from both sides

B^2 = 308

Then you find the square root of 308

17.5
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