A rectangular floor that has the length L = 9m and the width l = 3m must be covered with tiles with square shape and length of the side = 30 cm . Which is the necessary number of tiles ?
First we need to calculate the area of the floor
Since it is a rectangulal floor, then the area to be covered is L*I= 9*3=27 m ^2
Now we need to cover the area with (n) numbers of square each with 30 cm side:
Then the area of the square is 30*30=900 cm^2
Then 900*n = 270,000
==> n =300 tiles
Then we need 300 square tiles to cover the area.
check Approved by eNotes Editorial