Question

how many rectangular tiles 10cm b how many rectangular tiles 10 cm by 7 cm will be required to cover a floor 40 m by 12one and the half two m what will be the cost at rupees 5 per hundred tiles

Answer 1

No.of tiles require to cover the floor = area of floor (in cm) / area of one tile (in cm)
using this formula the total number of rectangular tiles is;
400 × 120 / 10 × 7 =685 tiles
and cost = 5/100 × 685 = 34.25 Rs