Question

a floor measuring 7m by 2.8 m is to be covered with tiles measuring 35cm square. how many tiles will be needed​

Answer 1

Answer:

∴ 560 no. of tiles measuring area 35cm square will cover the floor of area 19600cm square.

Answer 2

question:

a floor measuring 7m by 2.8 m is to be covered with tiles measuring 35cm square. how many tiles will be needed

Solution :

i ) Dimensions of the floor :

Length ( l ) = 7 m

Breadth ( b ) = 2.8 m

Area of the floor ( A ) = lb

A = 7 m × 2.8 m

A = 700cm × 280 cm -----( 1 )

ii ) side of each square tile(a)=35cm

Area of the each tile = a² cm²

iii ) Let the number of tiles

required = n

n = ( lb )/a²

n = ( 700 × 280 )/( 35 )²

n = ( 700×280 )/( 35×35 )

n = 160

Therefore ,

Number of square tiles required

= n = 160