A cuboid with dimensions 18.5 cm × 12.5 cm × 10 cm needs to be painted all over. Find the area to be painted.

Explanation

To find the area to be painted, we need to calculate the surface area of the cuboid. Given Dimensions: Length ( l ) = 18.5 cm Breadth ( b ) = 12.5 cm Height ( h ) = 10 cm Formula for the Surface Area of a Cuboid: Surface Area = 2(lb + bh + lh) Step 1: Substitute the given values: Surface Area = 2(18.5 × 12.5 + 12.5 × 10 + 18.5 × 10) Step 2: Calculate each term inside the parentheses: 18.5 × 12.5 = 231.25 12.5 × 10 = 125 18.5 × 10 = 185 Step 3: Add the results: 231.25 + 125 + 185 = 541.25 Step 4: Multiply by 2 to get the total surface area: Surface Area = 2 × 541.25 = 1082.5 cm² Answer: The area to be painted is 1082.5 cm².