The perimeter is the continuous line forming the boundary of a closed geometrical figure.i.e. sum of all the outside sides
In rectangle , there are two Height and 2 breadth
So, perimeter of rectangle = Height +Height + Breadth + Breadth
Perimeter of Rectangle = 2 Height + 2 Breadth
Perimeter of Rectangle = 2 ( Height + Breadth )
In the given question we have : Height = 12 in, Breadth =4 ft
Here the Standard Unit of Height and Breadth are different
Convert Height = 12 in into feet
1 feet = 12 inch
So, 12 in = 1 ft
Height = 12in = 1 ft
Thus, we have now : Height = 1 ft, Breadth =4 ft
Substitute the value in expression of perimeter :
Perimeter of Rectangle = 2 ( Height + Breadth )
Perimeter of Rectangle = 2 ( 1 + 4 )
Perimeter of Rectangle = 2 ( 5 )
Perimeter of Rectangle = 10 ft
Answer : Perimeter of Rectangle is 10 ft
Formula of Perimeter is 2 ( Height + Breadth )