Question

How many tiles whose length and breadth are 10 cm and 5 cm respectively will be needed to fit in a rectangular region whose length and breadth are respectively:

(a) 40 cm and 20 cm
(b) 70 cm and 60 cm​​

Answer 1

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

240

240Thus, 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

42

42Thus, 42 tiles are required

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Answer 2

Answer:

option A IS THE CORRECT ANSWER

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