Answer:
Length of the playground is 10 yd and the Width of the playground is 16 yd .
Explanation:
Formula 
Area of a rectangle = Length × Width
As given 
The area of a playground is 160 yd².
 The width of the playground is 6 yd longer than its length. 
Let us assume that the length be x . 
Thus 
Width = x + 6 
Put all the values in the formula 
160 = x × (x + 6)
160 = x² + 6x 
x² + 6x - 160 = 0 
x² + 16x - 10x - 160 = 0 
x (x + 16)-10 (x + 16) = 0 
(x -10)(x + 16) = 0 
Thus 
Either (x - 10) = 0 or (x + 16 ) = 0 
x = 10 or x = -16 
(Negative value is neglected because sides cannot be negative.)
Thus 
x = 10 
Length = 10 yd 
Width = 10 + 6 
 = 16 yd 
Therefore the length of the playground is 10 yd and the width of the playground is 16 yd .