Question

A scale drawing of Jack's living room is shown below:

A rectangle is shown. The length of the rectangle is labeled as length equal to 6 cm, and the width is labeled as width equal to 4 cm.

If each 2 cm on the scale drawing equals 10 feet, what are the actual dimensions of the room?

Length = 11 feet, width = 9 feet
Length = 30 feet, width = 20 feet
Length = 8 feet, width = 12 feet
Length = 22 feet, width = 20 feet

Answer 1

the width is:
$4 \times \frac{10}{2} = \frac{40}{2} = 20$
and the length is :
$6 \times \frac{10}{2} = \frac{60}{2} = 30$
the second one is true

Answer 2

Drawing : Actual
Scale
            2 : 10
      2 cm : 10 feet

Length
     6 cm : 30 feet
Width
     4 cm : 20 feet

The actual dimensions of the room are - Length=30 feet, Width=20 feet.
The answer is the second one.