A conference hall is 14 m long ,8 m wide and 4 m high . There are four windows and one door in it . The door measures 1m by 2m and each window measures 1m by 1.5 m. 
(A) How many liters are needed to paint all the walls of the hall ifone litre is enough for covering 18m2 ?
(B)what will be the cost of painting the hall if 1 litre costs $225 ?