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 Mathematics cbse std 6th Perimeter and Area

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CBSE-Class-6-Mathematics-NCERT-->View question

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13priya

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(a) Area of region = 100 cm x 144 cm = 14400 sq.cm
Area of one tile = 5 cm x 12 cm = 60 sq.cm
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 sq.cm
Area of one tile = 5 cm x 12 cm = 60 sq.cm
Number of tiles =
Area of region
Area of one tile
=2520/60
= 42
Thus, 42 tiles are required.

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