Emma has a wooden sculpture in the shape of a cuboid. The sculpture is 2.2 m high, 1.1 m wide and 0.55 m thick.
Emma plans to paint all the faces of the sculpture with
three coats of wood varnish.
a How many tins of wood varnish does Emma
need to buy?
b What is the total cost of the wood varnish?
varnish
$ 3.99
(Size of tin: 100 ml)
20 m2 per litre​