SURFACE AREA OF CUBE AND CUBOID WORKSHEET

1. Find the total surface area and lateral surface area of a cuboid whose dimensions are : length = 20 cm, width = 15 cm and height = 8 cm. Solution

2. The dimensions of a cuboidal box are 6 m x 400 cm x 1.5 m. Find the cost of painting its entire outer surface at the rate of $22 per square meter.  Solution

3. The dimensions of a hall is 10 m x 9 m x 8 m. Find the cost of white washing the walls and ceiling at the rate of $8.50 per square meter. Solution

4. Find the total surface area and lateral surface area of the cube whose side length is (i) 8 m (ii) 21 cm (iii) 7.5 cm

Solution

5. If the total surface area of a cube is 2400 cm2, then find its lateral surface area. Solution

6. A cubical container of side 6.5 m is to be painted on the entire outer surface. Find the area to be painted and the total cost of painting it at the rate of $24 per square meter.

Solution

7. Three identical cubes of side 4 cm are joined end to end. Find the total surface area and lateral surface area of the new resulting cuboid. Solution

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