a community hall is in the shape of a cuboid
The hall is 40m long, 15m wide and 3m high.
the community hall needs redecorating with new paint for the walls and ceiling, and new tiles on the floor.
a 10 litre tin of paint covers 25m² 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