Question

Help me please urgent! !

Answer 1

Answer: 8.3 feet

We know the area of 1 tile is:

$1tile=1ft^{2}$    (1)

We also know Jack used 103.75 tiles to cover the whole bathroom floor, which is a rectangle.

Remembering (1), we have that:

$103.75tiles=103.75ft^{2}$    (2)

Which is also the area of the rectangle from which we only have the value of one of its sides, the width $w$:

$w=12.5ft$    (3)

In addition, the area $A$ of a rectangle is given by the following equation:

$A=w.l$    (4)

Where $l$ is the length.

Substituting the value of the width written in (3) and the area (2) in equation (4):

$103.75ft^{2}=(12.5ft)l$    (5)

We finally have the value of the length of the bathroom floor:

$l=8.3ft$