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pai
A community hall is in the shape of a cuboid.
tiles
The hall is 40 m long, 15 m wide and
3 m high.
3 m
total
The community hall needs re-decorating
with new paint for the walls and ceiling,
and new tiles on the floor.
15 m
40 m
A 10 litre tin of paint covers 25 m² and costs £10.
1 m2 floor tiles cost £3 each.
Work out the total cost of paint and tiles needed
to re-decorate the community hall.