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

A rectangle has a length of 12 inches has a perimeter of 38 inches. What is the missing side of the rectangle ?

What is the area of the rectangle ?

Respuesta :

nwekoa

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!

ara0420
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