Question

the floor of a square room is covered with square foot floor tiles. If 81 tiles cover the floor how long is each side of the room?

Answer 1

Answer:

Area of square room floor=x

area of tile=81

side of tiles=√81

=9

area of square tiles=81×9= 729

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Answer 2

Size of each side of square room floor is 9 ft.

Step-by-step explanation:

Given:

Square room floor is covered with square foot floor tiles.

Number of tiles cover the floor is 81.

To Find:

Size of each side of square room floor.

Formula Used:

$R=S^{2}$        ------------------ formula no.01

S= size of one side of square room floor

R= area of the square room  floor

In square  all sides are equal.

Solution:

As given- square room floor is covered with square foot floor tiles.

                        Area of one tile = 1 sq. ft.

As given- Number of tiles cover the square room  floor is 81.

 Area of the square room  floor R= 81 sq. ft

Applying formula no.01

$R=S^{2}$

$81=S^{2}$

$S=\sqrt{81}$

$S=9 \ ft.$

In square  all sides are equal.

Each side of   square room  floor  = 9 ft.

Thus, size of each side of square room floor is 9 ft.