Answer:
716 tiles needed.
Explanation:
The parameters of a room given in the question are
Length = 10 feet
Width = 14 feet
Height = 12 feet
and Jamie wants to put the tiles on walls and the floor of his room.
Dimensions of each tile
Length = 1 feet
width = 1 feet
Surface area of walls and floor = 4 walls + floor = 4(Area of one wall) + area of floor
= 2(Length×height + width×height) + (length×width)
= 2(10×12 + 14×12) + (10×14) = 2(120+168) + 140 = 2×288 + 140 = 576 +140 = 716
Now total number of tiles required = Total area to be covered/area of one tile
Number of tiles = 716/1 = 716
Therefore 716 tiles needed by Jamie.