A community hall is in the shape of a cuboid. The hall is 20m long, 15m wide and
4m high.
The community hall needs re-decorating
with new paint for the walls and ceiling,
and new tiles on the floor.
A 20 litre tin of paint covers 40 m2 and costs £15.
1 m2 floor tiles cost £3 each.
Work out the total cost of paint and tiles needed
to re-decorate the community hall.