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Mandarinka [93]
3 years ago
8

Somebody please help me

Mathematics
1 answer:
tatiyna3 years ago
5 0

11 + c = 15 \\  - 11 \:  \:  \:   \:  - 11 \\ c = 4
the answer is 11+c=15
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now, we know what the apothem is.

\bf \textit{area of a regular polygon}\\\\
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