Answer:
To find the width of the frame around the picture, we need to subtract the area of the picture from the area of the outside dimensions of the frame.
The outside dimensions of the frame are 18 cm by 20 cm, which means the area of the frame is:
Area of the frame = (18 cm) × (20 cm) = 360 cm²
The area of the picture is given as 224 cm².
To find the width of the frame, we subtract the area of the picture from the area of the frame:
Width of the frame = Area of the frame - Area of the picture
Width of the frame = 360 cm² - 224 cm²
Width of the frame = 136 cm²
Therefore, the width of the frame around the picture is 136 cm².
