A Room is 15m long and 8 m wide. Its floor is to be covered with rectangular
tiles, each measuring 20cm By 8 cm. Find:
How many tiles will be required;
The cost of these tiles at Rs. 16 per tile.
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7
Step-by-step explanation:
.Answer
Correct option is
A
960;207
We know, 50cm=0.5m and
25cm=0.25m
Tiles along the length of the room=0.515 = 30 tiles
Tiles along the length of the room=0.258 =32 tiles
Total number of tiles required =30×32 =960 tiles
To leave 1m between the carpet and wall on all sides, the carpet needs to be 2m shorter in each dimension.
Therefore,
(15−2)m(8−2)m
=(13×6)m
=78m2
Therefore, the room area is 15×8 = 120m2
The carpet area is 78m2
The fraction of the area uncovered =120120−78= 12042=207
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