Question
Mathematics Question on Area
How many tiles whose length and breadth are 12 cm and 5 cm respectively will be needed to fit in a rectangular region whose length and breadth are respectively:
(a) 100 cm and 144 cm
(b) 70 cm and 36 cm.
Answer
(a) Area of region = 100 cm x 144 cm = 14400 cm2
Area of one tile = 5 cm x 12 cm = 60 cm2
Number of tiles = Area of region Area of one tile
= 14400 60 = 240
Thus, 240 tiles are required.
(b) Area of region = 70 cm x 36 cm = 2520 cm2
Area of one tile = 5 cm x 12 cm = 60 cm2
Number of tiles = Area of region Area of one tile
= 2520 60 = 42
Thus, 42 tiles are required.