Calculate the area of rectangle A.

Here are the solutions to the problems. 3.2.1 Step 1: Calculate the area of rectangle A. Area A = length × width = 100 cm × 40 cm = 4000 cm^2 Step 2: Calculate the area of rectangle B. Area B = length × width = 120 cm × 60 cm = 7200 cm^2 Step 3: Calculate the total area in square centimeters. Total Area = Area A + Area B = 4000 cm^2 + 7200 cm^2 = 11200 cm^2 Step 4: Convert the total area from square centimeters to square meters. Since 1 m = 100 cm, then 1 m^2 = (100 cm)^2 = 10000 cm^2. Total Area in m^2 = 11200 cm^210000 cm^2/m^2 = 1.12 m^2 The area of the shape of all boxes is 1.12 m^2. 3.2.2 Step 1: Calculate the total area to be painted for two coats. The total area for one coat is 1.12 m^2 (from 3.2.1). Area for two coats = 1.12 m^2 × 2 = 2.24 m^2 Step 2: Convert the volume of paint from milliliters to litres. 500 ml = (500)/(1000) litres = 0.5 litres Step 3: Calculate the area that 0.5 litres of paint can cover. Given that 1 litre of paint covers 6.2 m^2. Area covered by 0.5 litres = 0.5 litres × 6.2 m^2/litre = 3.1 m^2 Step 4: Compare the required area with the area the paint can cover. Required area for two coats = 2.24 m^2. Area covered by 500 ml paint = 3.1 m^2. Since 3.1 m^2 > 2.24 m^2, the 500 ml can of paint is sufficient to cover the shapes with two coats. Step 5: Verify the salesman's statement. The salesman stated that a 500 ml can is not enough. Our calculations show that it is enough. Therefore, the salesman's statement is incorrect. Send me the next one 📸