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ElenaW [278]
2 years ago
9

Find the missing length. Please put the explanation of how you solved it.

Mathematics
1 answer:
olasank [31]2 years ago
5 0

Answer:

21.5(to 3sf)

Step-by-step explanation:

Following the Pythagoras Theorem,

a²+b²=c²

20²+8²=464

c²=464

c=√464

=21.5(to 3sf)

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