Question

35. A floor is 121 cm long and 99 cm wide how many square tiles of side 11 cm will be needed
floor?​

Answer 1

Answer :-

• Number of tiles required to tile the floor is 99 tiles.

Step-by-step explanation:

To Find :-

• Number of square tiles required to tile the floor.

Solution:

Given,

A floor is 121cm long and 99cm wide.

• Length of the floor = 121m
• Breadth of the floor = 99m

Therefore, Area of the floor is,

=> Length × Breadth

=> 121m × 99m

=> ( 121 × 99 ) m²

=> 11979m²

Hence The area of the floor is 11979m².

Also given,

• Side of a square tile = 11cm

Therefore, Area of one tile is,

=> ( side )²

=> ( 11m )²

=> 121m²

Hence, The area of a square tile is 121m².

According the question,

• Number of tiles required

=> Area of floor ÷ Area of a square tile

=> 11979 ÷ 121

=> 99

Therefore, Number of tiles required to tile the floor is 99 tiles.