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Marysya12 [62]
3 years ago
12

Polygon ABCDE is an irregular pentagon. Find the perimeter of the polygon. Round to the nearest tenth. Round to give final answe

r only.

Mathematics
2 answers:
nevsk [136]3 years ago
8 0

Answer:

13.9 units

Step-by-step explanation:

AB = sqrt(2² + 3²) = sqrt(13)

BC = sqrt(2² + 2² = sqrt(8)

CD = sqrt(1² + 2²) = sqrt(5)

DE = 3

EA = sqrt(1² + 2²) = sqrt(5)

Add all these:

13.9 units

Ad libitum [116K]3 years ago
4 0

Answer:

12.9

Step-by-step explanation:

AB = \sqrt{2^{2}+3^{2}  } = \sqrt{13}

BC = \sqrt{2^{2}+2^{2}  } = 2\sqrt{2}

CD = \sqrt{1^{2}+2^{2}  } = \sqrt{5}

DE = 3

EA = \sqrt{1^{2} + 2^{2} } = \sqrt{5}

The sum of all of these (in decimal form) is (approx.) 12.9

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