1 thought on “How many tiles whose length and breadth <br /><br />are 12 cm and 5 cm respectively will be <br /><br />needed to fit in a rectang”
Q12) 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
Solution:
(a) Area of region = 100 cm x 144 cm = 14400 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = [tex]\frac{Area\ of\ region}{Area\ of\ one\ tile}[/tex]
Thus, 240 tiles are required.
(b) Area of region = 70 cm x 36 cm = 2520 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = [tex]\frac{Area\ of\ region}{Area\ of\ one\ tile}[/tex]
Q12) 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
Solution:
(a) Area of region = 100 cm x 144 cm = 14400 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = [tex]\frac{Area\ of\ region}{Area\ of\ one\ tile}[/tex]
Thus, 240 tiles are required.
(b) Area of region = 70 cm x 36 cm = 2520 cm.sq
Area of one tile = 5 cm x 12 cm = 60 cm.sq
Number of tiles = [tex]\frac{Area\ of\ region}{Area\ of\ one\ tile}[/tex]
= 42
Thus, 42 tiles are required.