The internal length, breadth and height of a rectangular room are 6 m, 5.2 m and 4.5 m
respectively. It has two doors each of 1.2 m by 2 m and three windows each of 1 m by 80 cm.
Find the total internal area of the room to be whitewashed.
Also, find the cost of whitewashing the room (excluding the doors and windows) at the
rate of 6 per m2.
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