Question

A floor of building is covered with 2760 tiles each tiles is the shape of a parallelogram of altitude 3 cm and based 4.5 CM find the cost of polishing the tiles at the rate of rs 20 per m^2

Answer 1

Answer:

Rs. 65.52

Step-by-step explanation:

Base=4.5 , Height=3

Area= Base× Height=4.5×3=13.5

Area of floor= Area of tile× Number of tiles

= 13.5×2760=37260cm^2

1cm^2=10^-4m^2

37260cm^2=3.2760m^2

cost= Total Area×cost per m^2=3.276×20

= 65.52

Answer 2

Step-by-step explanation:

BASE= 4.5CM

ALTITUDE OR HEIGHT= 3CM

AREA OF PARALLELOGRAM= BASE× HEIGHT

AREA OF 1 TILE= 4.5×3 = 13.5 CM²

AREA OF 2760 TILES= 13.5× 2760 = 37260 cm²

COST OF POLISHING THE TILES= RS 20/m²

= 37260 CM IN METRE = 37260 ÷ 100

=372.60 m²

= 372.60 × 20

= RS 7452.