width = 3

length = 4

side of square = 0.5

area = 4 * 3

area = 12

Number of tiles = Area of room / Area of a tile

side = 0.5

area = 0.5 * 0.5

area = 0.25

Number of tiles = 12 / 0.25

A plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.

where,

l = length

w = width

d = diagonal

p = perimeter

A = area