Question

5. A wall of length of 84 m and width 25 m is to be covered by a square stone slab whose
each side is of 75 cm. How many slabs are needed to cover the whole wall?​

Answer 1

Step-by-step explanation:

Area of wall=84 m×25m=2100m²

Area of sqare stone slab =75cm×75cm=5625 cm²

=0.5625m²

No of sqare slab =2100/0.5625

=3733 tiles

Answer 2

Good Morning.

Ok, Dude let me explain this.

First, you need to find the area of the wall that is l x b

Length of the wall = 84m

Breadth of the wall = 25m

As we know how to fond the area,

Here it is

Area of the wall = l x b = 84 x 25 = 2100m

So next we must find the area of the square stone.

To find the area of a square we must s x s

Side of the stone = 75cm

Area of the stone = s x s = 75 x 75 = 5,625 cm

Now we see that the area of the wall is in m so we must convert it into cm.

( 1m = 100cm )

So, 2100 x 100 = 2,10,000 cm

Finally

No. of stone slab needed = 2,10,000/75 = 2,800 slabs needed.

Therefore 2,800 slabs are needed.