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17 votes
Sorry this was the questions ​

Sorry this was the questions ​-example-1
User Peku
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2 Answers

4 votes
I think the answer is 90
User Xavdid
by
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7 votes

9514 1404 393

Answer:

(c) 90 m

Explanation:

The perimeter is the sum of the side lengths. Each of the lower-right and lower-left indents can be reversed to make the figure a 20 m by 25 m rectangle without changing the perimeter. Then the perimeter is ...

P = 2(L +W)

P = 2(25 m + 20 m) = 2(45 m)

P = 90 m

_____

If you start at the upper left corner and work clockwise, the perimeter is the sum of segment lengths ...

P = 20 m + 5 m + 8 m + 20 m + 4 m + 20 m + 8 m + 5 m

P = 90 m

__

The units must be given as part of the measurement of the perimeter. That is why choice B (90) is inappropriate.

User Olppah
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