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stealth61 [152]
3 years ago
15

9 m ? perimeter =42meters length= ​

Mathematics
1 answer:
schepotkina [342]3 years ago
5 0

Answer:51

Step-by-step explanation:

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So the square was fine, then the triangle decided to go for a hike.

now, if the triangle when it took off, it took 59 cm², and the square was left all by its lonesome with only 85 cm², that means with the triangle in it, the square is then 59 + 85 cm², or 144 cm².

\bf \textit{area of a square}\\\\&#10;A=s^2\qquad &#10;\begin{cases}&#10;s=\textit{length of a side}\\&#10;---------\\&#10;A=144&#10;\end{cases}\implies 144=s^2&#10;\\\\\\&#10;\sqrt{144}=s&#10;\implies 12=s
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