Perimeter P of rectangle having length = x + 8 and width = y – 1 is 2x + 2y + 14.
Solution:
Need to determine perimeter P, of a rectangle.
Length of rectangle = x + 8
Width of rectangle = y – 1
As length and width are given in expressions, final result of perimeter will also be an expression.
Formula for perimeter of rectangle is as follows
Perimeter of rectangle = 2 (length + width)
On substituting given values in formula of perimeter, we get
P = 2 ((x + 8) + ( y – 1 ) )
=> P = 2( x + 8 + y -1 )
=> P = 2 ( x + y + 7)
=> p = 2x + 2y + 14
Hence perimeter P of rectangle having length = x + 8 and width = y – 1 is 2x + 2y + 14.