Question

A marble tile measures 12 cm × 10 cm. How many tiles will be required to cover a wall of size 4 m by 3 m? Also, find the total cost of the tiles at ₹ 22.50 per tile.

Answer 1

Hey!

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Length of tile = 12 cm
Breath of tile = 10 cm
Area of tile = L×B
= 12×10
= 120 cm^2
= 0.012

Length of wall = 4 m
Breath of wall = 3m
Area of wall = L×B
= 4×3
= 12 m^2

Number of tiles needed to cover the wall = 12/1.2
= 1000 tiles

Cost of 1 tile = Rs 22.5
Cost of 10 tiles = 1000 × 22.5
= Rs 22500

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Hope it helps...!!!

Answer 2

Area of one tile = 12*10
                          = 120cm^2

Area of wall = 400*300 
                    = 120000 cm^2

tiles Required = $\frac{120000}{120}$

tiles required = 1000 

Now,

Cost of tiles = 1000×22.50 

Cost of tiles required = Rs 22500



i hope this will help you


-by ABHAY