Sir/Madam can you please solve question no.24 AREA OF PLANE FIGURES
24. Find the cost ofthe paper for the walls oftheroom
ifeach piece of paper is 40 cm wide and 60 cm long
: the room is 6 m long, 4 m wide, 3 m high and
the cost of paper is 1.40 per piece ; allow I I m
for doors, etc., and assume that a whole number of
pieces has to be bought.
25. A cistern 6 m long, 4 m wide, contains water to a
depth of I m 25 cm, find the area of the wet surface.
2
