Question

a room is 9 metre wide. its floor is covered with 1230 square tiles.Each sides of tile is 30 cm. find the length of the room .​

Answer 1

Answer:

to get one side of the room take the area of the area of the tiles × the number of tiles divided by the width you are given ..

NB beware of the units on is in m the other cm....always work with the same units ALWAYS.

1230×0.3×0.3/9× X=110.7/9

=12.3

SO x =12.3cm

Answer 2

Answer:

area of 1 tile= 900cm^2

area of 1230 tiles = 1230 * 900= 1107000

area of 1230tiles in m = 110.7=area of room

Step-by-step explanation:

area of room = l * b

110.7=l * 9

l=12.3m

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