Answer:
22 feet
Step-by-step explanation:
Given
To find the actual perimeter, we need the breadth of balcony(B)
The ratio of length to breadth in blue print must be equal to the ratio of actual length to breadth
⇒
[tex]\frac{\text{length of rectangular balcony in blueprint}}{\text{breadth of rectangular balcony in blueprint}} =\frac{\text{length of rectangular balcony actually}}{\text{breadth of rectangular balcony actually}}[/tex]
[tex]\frac{l}{b} =\frac{L}{B} \\B\times l=L \times b\\B= \frac{L \times b}{l}=\frac{7 \times 1}{1.75} =4[/tex]
Therefore Breadth actually=4 feet
⇒Perimeter
[tex]=2\times(length+breadth)\\=2\times(7+4)\\=2\times(11)\\=22[/tex]
Therefore perimeter of rectangular balcony= 22 feet
