Question

A floor is tiled using square tiles of equal size as shown below. How many square tiles will cover the area of the floor?

• A. $15$ square tiles
• B. $5$ square tiles
• C. $10$ square tiles
• D. $16$ square tiles

Answer 1

The correct option is D $16$ square tiles

We can split the floor into two rectangles as shown below


Let's calcualte the number of tiles in the first rectangle.
Number of row $=2$
Number of tiles in each row $=5$
Number of tiles $=5+5=$ number of rows $\times$ number of tiles in each row $=2\times 5=10$
Let's calculate the number of tiles in the second rectangle.
Number of rows $=2$
Number of tiles in each row $=3$
Number of tiles $=3+3=$ rows $\times$ number of tiles in each row $=2\times 3=6$
Total number of tiles $=$ number of tiles in the first rectangle $+$ number of tiles in the second rectangle
$=10+6=16$ square tiles
So, $16$ square tiles will cover the floor.