Question

5. A floor 15 m long and 12 m broad is tobe paved with square tiles of side 30 cm.Find the number of tiles required.​

Answer 1

15m long therefore,

length ( l ) =15m

12m broad therefore,

breadth ( b ) =12m

Since the sides are different in measures it's a Rectangle.

To find the number of tiles required we have to find Area of rectangle first

Area of rectangle = l×b

=15×12

=180 sq.m

Then,we have find the area of the tiles next

The tile is square in shape therefore it has only length

l =30cm

Area of square = l×l

= 30×30

= 900 sq.cm

Now let's convert cm(centimetre) into m(metre)

= 900÷100 sq.m

= 9 sq.m

Let's use this formula

Number of tiles = Area of rectangle÷Area of tiles

=180/9

=20 tiles