7

To solve problem 7, you need to find the area of each rectangle. 1. \(3 \, \text{cm} \times 9 \, \text{cm} = 27 \, \text{cm}^2\) 2. \(24 \, \text{cm} \times 42 \, \text{cm} = 1008 \, \text{cm}^2\) 3. \(5 \, \text{cm} \times 35 \, \text{cm} = 175 \, \text{cm}^2\) The areas are: - First rectangle: \(27 \, \text{cm}^2\) - Second rectangle: \(1008 \, \text{cm}^2\) - Third rectangle: \(175 \, \text{cm}^2\)