Mr. Henry wants to tile is living room floor.The diagram below showing his living room.

(1) What is the shape of his living room floor ?

(2) Calculate the area of his living room floor.(2 marks)

The shaded region represents one title.If each tile measures 2m by 2m,
how many tiles will cover the living room floor.

(4)The tiles are being sold at $ 180 each. How will it cost to cover the living floor with titles?

(5)Mr. Henry needs a boundary to go around the titles.Calculate the length of the boundary he needs.