Given:
The perimeter of a backyard basketball court with four sides is 90 feet.
Two sides of the court are each 20 feet long.
One side of the court is 25 feet long.
To find:
The missing side length of the basketball court.
Solution:
Let x be the missing side length.
The three given sides of the basketball court are 20 feet, 20 feet, 25 feet.
We know that the perimeter is the sum of all sides.
[tex]Perimeter=x+20+20+25[/tex]
[tex]Perimeter=x+65[/tex]
The perimeter of a backyard basketball court with four sides is 90 feet.
[tex]x+65=90[/tex]
[tex]x=90-65[/tex]
[tex]x=25[/tex]
Therefore, the missing side length is 25 feet and the correct option is B.
