16 cm, find its length. Also find the
5. 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 1 m by 2 m and each window measures I m by 1.5 m
(a) How many litres are needed to paint all the walls of the hall if one litre is enough for
covering 18 m??
(b) What will be the cost of painting the hall if 1 litre costs ? 225?
area of each of the following figures:
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