Respuesta :

lironica
perimeter of rectangle =2(l+b)

43.8 =2(12.4 + w)

21.9=12.4 +w

21.9-12.4 = w

w=9.5 feet
231agoad
The width is 9.5.

  First you know what the length is. You must find the measurement of both combined.
   12.4 x 2 = 24.8   (Length)

  Subtract this number from the perimeter.  43.8 - 24.8 = 19.

  19 is your width multiplied by two. The total measurement of both, to find just the width divide by 2.

  19 / 2 = 9.5 (WIDTH)