Question

Marks : +2,-
A rectangular courtyard is 21m long and 13m 20 cm
broad. It is to be paved with square tiles of side
60cm. Find the least possible number of such tiles.
​

Answer 1

Answer:

770 tiles.

Step-by-step explanation:

Given:

Length of rectangular courtyard = 21 m.

Breadth of the same = 13 m 20 cm.

1 m = 100 cm.

20 cm = 20/100 m = 0.2 m.

Therefore, breadth = 13.2 m.

Area of courtyard =  length * breadth

= 21 * 13.2

= 277.2 m².

Side of 1 square tile = 60 cm = 0.6 m

Area of 1 square tile = 6*6 / 10*10 = 36/100 = 0.36 m².

Therefore, For a courtyard of area 277.2 m², Some "n" number of tiles of which area of 1 tile is 0.36 m² must be placed.

So, 0.36 * n = 277.2

n = 277.2 / 0.36

n= 27720 / 36

n = 770

Therefore 770 tiles must be placed in that courtyard.

Hope this helps you :)  :)