Question

A marble tile measures 20 cm by 15 cm. How many tiles will be required to cover a wall of sizs 5m by 3m?

Answer 1

area of a tile is=(20×15)cm
=300cmsquare
area of a wall=(5×3)m
15msquare

area of wall in cm=15×100×100
=150000cm
area of tile in cm=300×100
=30000cm.
tiles will be required to cover a wall is.......
=150000÷30000
=5.
so 5 is the answer.
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