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# Exercise 7.2: Surface Area of Cuboid and Cube

Maths : Mensuration: Book Back, Exercise, Example Numerical Question with Answers, Solution: Exercise 7.2: Surface Area of Cuboid and Cube

Surface Area of Cuboid and Cube

Exercise 7.2

1. Find the Total Surface Area and the Lateral Surface Area of a cuboid whose dimensions are: length = 20 cm, breadth = 15 cm and height = 8 cm 2. The dimensions of a cuboidal box are 6 m Ă— 400 cm Ă— 1.5 m. Find the cost of painting its entire outer surface at the rate of â‚ą22 per m2. 3. The dimensions of a hall is 10 m Ă— 9 m Ă— 8 m. Find the cost of white washing the walls and ceiling at the rate of â‚ą8.50 per m2. 4. Find the TSA and LSA of the cube whose side is (i) 8 m (ii) 21 cm (iii) 7.5 cm 5. If the total surface area of a cube is 2400 cm2 then, find its lateral surface area. 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 â‚ą24 per m2. 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. Tags : Numerical Problems with Answers, Solution | Mensuration | Maths , 9th Maths : UNIT 7 : Mensuration
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9th Maths : UNIT 7 : Mensuration : Exercise 7.2: Surface Area of Cuboid and Cube | Numerical Problems with Answers, Solution | Mensuration | Maths