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Math - Geometry Lesson Plans : Surface Area of Cuboids & Cubes


Mensuration - Solve each exercise problem related to surface area of cuboids and cubes given below.

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1.

A cuboid of dimensions 120 cm × 60 cm × 30 cm is melted and recast into a cube. Find the total surface area (in cm2) of the cube.
 
Hint      

2.

Four cubes, each of side 4 cm are joined end to end. Find the total surface area (in cm2) of the resultant cuboid.
 
Hint      

3.

Find the lateral surface area (in m2) of a cuboid 8 m long, 60 cm broad and 5 m high.
 
Hint      

4.

The area of the square on the diagonal of a cube is 1452 cm2. Find the total surface area (in cm2) of the cube.
 
Hint      

5.

Find the total surface area (in m2 upto one decimal place) of a cuboid 8 m long, 4 m broad and 70 cm high.
 
Hint      

6.

The length of the diagonal of a cube is 14 √3 cm. Find its total surface area (in cm2).
 
Hint      

7.

Find the total surface area (in m2) of a cube of side 15 m.
 
Hint      


 
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