Question

A room is 9 m wide. Its floor is covered with 1230
square tiles. Each side of the tile is 30 cm. Find the
length of the room.
A. 14.6 m
B. 11 m
12.3 m
D. 11.07 m​

Answer 1

Answer:

answer us 12.3m

area of room = 30×30×1230

Answer 2

The length of room is 12.3 m

Step-by-step explanation:

Side of tile = 30 cm

Area of 1 tile = $Side^2 = 30^2 = 900 cm^2$

Area of 1230 tile = $1230 \times 900 =1107000 cm^2$

So, area of floor = 1107000 sq.cm.

Width of floor = 9 m =900 cm

Length of floor =$\frac{\text{Area of floor}}{Width}=\frac{1107000}{900}=1230cm = 12.3 m$

Hence The length of room is 12.3 m

#Learn more:

The area of a rectangular garden is690 m squar if length of the garden is 30 m square, find the dreadth and perimeter of rectangular garden

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