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Agata [3.3K]
3 years ago
10

Q) 18 & 20 please answer.

Mathematics
1 answer:
Setler [38]3 years ago
5 0
18. S=r^2-t^2
S+t^2=r^2
r=sqrt(S+t^2)
20. Tan 18=x/12
x=12×Tan 18
x=3.899036355
x=3.90

I hope this helps.
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