Answer:
The perimeter of her bedroom is 36.67 ft.
Step-by-step explanation:
Julisa's bedroom is similar to her brother's bedroom.
If the width of her bedroom is w and the length is l and her brother's room has width W and length L, then
[tex]\frac{w}{W} = \frac{l}{L}[/tex] ............. (1)
Now, the dimensions of her brother's bedroom are given by 12 ft long by 10 ft wide and her bedroom has length 10 ft.
Then, from equation (1) we get,
[tex]\frac{w}{10} = \frac{10}{12}[/tex]
⇒ w = 8.33 ft.
Therefore, the perimeter of her bedroom is 2(8.33 + 10) = 36.67 ft. (Approximate) (Answer)