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Reptile [31]
3 years ago
12

Please help. I’ll mark you as brainliest if correct

Mathematics
2 answers:
Tpy6a [65]3 years ago
7 0

Answer:

The area is 84. The missing side is 7.

Step-by-step explanation:

Okay so perimeter = length+length+width+width right? If 12 is the length, then 12+12=24, which is the length part of perimeter. 38-24=14 and 14/2=7. The missing side is 7 because 12+12+7+7=38 and the area is 84 because 12x7=84. Good luck!

Verdich [7]3 years ago
4 0
Answer: w = 7, A = 84

P = 2l + 2w
38 = 2(12) + 2w
38 = 24 + 2w
14 = 2w
w = 7 in.

A = lw
A = (12)(7)
A = 84 in^2
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