Question

Q3. A room is 9.5 m long and 7.4 m wide. A person wants that the floor of the room to be fitted with tiles of
size 20 cm by 10 cm. Find the number of tiles needed.​

Answer 1

Acc. To Me,

Your Ans is 3515

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Just change both in one unit i change it to cm

100cm=1m

950cm=9.5m

740cm=7.4

Area required whole room

740*950=703000cm²

Area of single piece

20*10=200cm²

Number of tile= Area

                   1   = 200

means 1 tile have 200cm sq then

how many tile in 1 cm²

             1/200 = 200/200

             1/200 tiles = 1 cm²

1/200 tile require cm² then

how many tile require 703000 cm²

                 703000/200=703000*1

                             3515 tile=703000cm²

means 3515 tile require in room

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