Since a square has four equal sides, just divide 60 by four. The answer will be 15. Each side of the square is 15 feet.
One yard equals three feet, so 2 yards equals 6 feet. Multiplying 63 by three you get 189 feet.
1 yard =3 feet
63 yards ×3 = 189 feet
Lateral area = 2(6*5( + 2(6*3)
total area = lateral area + 2(5*3)
Volume = 6*5*3