Question

A rectangular swimming pool 60m long, 40m wind , 1.5m deep is to be tiled. If the side of the square tile is 50cm. Find the number of tiles needed

Answer 1

the number of tiles needed =48

Answer 2

Answer:

30000

Step-by-step explanation:

Pool is in the shape of cuboid .

So, we are supposed to find the lateral surface area of cuboid with one base because tiles are covered on the walls and the base of swimming pool.

So, area of swimming pool needed to be covered by tiles =Lateral surface Area of cuboid +Area of 1 base.

Area of swimming pool needed to be covered by tiles:

=$2(lb+bh+hl)+lb$

length = l = 60 m

Breadth = b= 40 m

Height = h = 1.5 m

Substitute the values.

=$2(60 \cdot 40+40 \cdot 1.5+1.5 \cdot 60)+60 \cdot 40$    

=$7500 m^2$            

Side of tile = 50 cm = 0.5 m

Area of square tile = $Side^2 = 0.5^2 =0.25 m^2$

So, number of tiles required = $\frac{7500}{0.25}$

                                                = $30000$

Thus the number of tiles required is 30000.