Answer:
New dimension: 16.8 feet by 19.6 feet.
Explanation:
Given that,
The original dimensions of the room were 144 inches by 168 inches. Rick renovated his home. He made his bedroom 40% larger than its original size.
40% of 144 = 57.6
New length is 144 + 57.6 = 201.6 inches
40 % of 168 = 67.2
New breadth is 168 + 67.2 = 235.2 inches
Since, 1 foot = 12 inch
201.6 inches = 16.8 feet
235.2 inches = 19.6 feet
The new dimension of the room is 16.8 feet by 19.6 feet.