The length of a hall is 18 m and its width is 13.5 m. Find the least number of square tiles, each of side 25 cm, requires to cover the floor of the hall, leaving a margin of width 1.5 m all around.
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area to be covered is 18-3=15
and 13.5-3=10.5
area is 15*10.5 which is equal to 157.5m
area of 1 tile is equal to 0.25*0.25 which is 0 .0625m
so we get 1575000/625 which is equal to 2520
2520 tiles are needed to fill the floor...
hope it helps
and 13.5-3=10.5
area is 15*10.5 which is equal to 157.5m
area of 1 tile is equal to 0.25*0.25 which is 0 .0625m
so we get 1575000/625 which is equal to 2520
2520 tiles are needed to fill the floor...
hope it helps
binson:
thank you for helping me out
but how does that 3 comes at first( 18-3 and 13.5-3)? is it 1.5+1.5?
while writing the answer of area it should be m², cm², etc. Am I right?
yes it is 1.5+1.5
yes it should be m square
pls mark it as brainliest.
thanks
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