Question

Brianna went on a trip to the art museum and sketched a scale drawing of a rectangular wall mural. She used a scale factor of 0.2. The sketch was 12 inches wide and 18 inches long. What was the length of the mural?
3.6 inches
18.2 inches
60 inches
90 inches

Answer 1

Answer:

The length of the mural was 90 inches.

Step-by-step explanation:

Brianna went on a trip to the art museum and sketched a scale drawing of a rectangular wall mural.

She used a scale factor of 0.2 = $\frac{1}{5}$

the sketch was 18 inches long.

Let the length of the mural be x

the actual length of the mural = $\frac{1}{5}$x = 18

                                             x   = 18 × 5

                                              x  = 90

The length of the mural was 90 inches.

Answer 2

Answer:

the wall lenght is 90

Step-by-step explanation:

you know the scale factor is 1/5 so you take the lenght of the drawing and multipy it by 5.