Question

A marble tile measures 10cmx12cm.How many tiles will be required to cover a wall of size 3mx4m... Answer fast exam tom plz.........

Answer 1

area of a marble tile = 10*12
                                 =120cm²
area of wall = 300*400
                    = 120000cm²
tiles required = 120/120000
                      = 1000 tiles
hence, the no. of tiles required will be 1000

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Answer 2

area of marble tile = l x b
= 10 x 12cm
= 120cm

area of  the wall = l x b                              1m=100cm
= 300 x 400                                                3m=3 x 100= 300 cm
=1,20,000cm                                              4m=4 x 100= 400 cm 
 number of tiles required to cover the wall =
                 area of the wall ÷ area of a tile
=1,20,000 ÷ 120
=1,000
∴1,000 tiles are required to cover the wall