In her first design for water rush Ms Luca used 4 same-size rectangular bins to hold sand. Each bin had a volume of 180 cubic yards. Then ms Luca changed her design to use 2 new same-size rectangular bins. The total volume of the 2 new bins. The volume of the 2 new bins is equivalent to the total volume of the 4 original bins. What is the length of each of the new bins. Show your work.