a floor 5 m by 20 m is covered by square tiles of side 20 cm.How many tiles are needed

Question

it is a mensuration maths want ur solution!!!

Answer 1

A floor 5 m by 20 m is covered by square tiles of side 20 cm.

How many tiles are needed?

 

5 m = 500 cm; so 500/20 = 25 tiles will fit along that side.

 

20 m = 2000 cm; so 2000/20 = 100 tiles will fit along that side.

 

So the floor is 25 tiles x 100 tiles = 2500 tiles.

 

[But what about the grout lines?]

Answer 2

Given

The floor 5m by 20m (total surface area is 100m) and the tiles are 20cm;

 

1cm = 0.01m

 

so

 

20cm = 0.2m

 

The area of each tile would be 0.2m * 0.2m = 0.04m

 

To find the total number of tiles needed, we'll divide the size of the total surface area(100m) by the area of each tile(0.04m)

 

100m / 0.04m = 2500.

 

So 2500 tiles are needed.

 

 

Answer 3

 A = 20m * 5 m = 100 m² = 10 ^6 Cm²

 

 n = 10^6 cm² / ( 20 * 20 cm²) = 2500