Question

20. How many tiles whose length and breith are 12 cm and 5 cm respectively will be needed to ita
rectangular region whose length and breadth are respectively:
(a) 100 cm and 144 cm
(b) 70 cm and 36 cm.​

Answer 1

divide the area of tile by the area of rectangular region

Answer 2

Answer:

a)number of tiles needed 100×144/12×5

=20×12=240

b) number of tiles needed 70×36/12×5

=14×3=42