Question

a rectangular hall has a length of 40 m and width of 14 m. if the hall is to be tiled using 70 cm x 40 cm tiles then,What will be the total cost at the rate of 40 per tile?​

Answer 1

Step-by-step explanation:

Length of a rectangular hall L=40 m

Breadth of the rectangular hall B=18 m

So, the area of hall

=L×B=40×18=720 m

2

Since,

Length of tiles l=1 m

Breadth of tiles b=50 cm=0.5 m

So, the area of each tile

=l×b=1×0.5=0.5 m

2

Therefore, the numbers of tiles are required

=

0.5

720

=1440

Answer 2

Answer:

A rectangular hall has a length of 40 m and a width of 14 m. If the hall is to be tiled using 70 cm x 40 cm tiles then, 2000tiles will be needed and the total cost at the rate of 40 per tile is 80000 .

Step-by-step explanation:

Length of a rectangular hall L=40 m

The breadth of the rectangular hall B=14 m

So, the area of the hall = L× B = 40×14=560 sq. m    

Since,  Length of tiles l=70cm = 0.70 m

Breadth of tiles b=40 cm=0.40 m

So, the area of each tile

=l × b=0.70 ×0.40=0.28 sq. m    

Therefore, the number of tiles are required

=560 /0.28 =2000

So, 2000 tiles will be needed.

If rate of tile is 40per tile then cost of 2000 tiles = 2000 × 40 = 80000