Final answer:
To make a scale drawing of her bedroom, Elena needs to divide the actual measurements by the scale factor. The width of the door in the scale drawing can be found by dividing the actual width of the door by the scale factor.
Step-by-step explanation:
To make a scale drawing of her bedroom, Elena needs to use the chosen scale of 1 to 50. Since the actual length of her bedroom is 5 meters and the actual width is 3 meters, she needs to divide the actual measurements by the scale factor to determine the dimensions in the scale drawing.
To find the width of the door in the scale drawing, Elena can divide the actual width of the door (0.8 meters) by the scale factor (50). This would give her a width of 0.016 meters in the scale drawing.
Therefore, Elena should draw her bedroom with dimensions of 0.1 meters by 0.06 meters in the scale drawing, and the door should be represented with a width of 0.016 meters.