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9th CBSE
IMPORTANT
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A 4 cm cube is cut into 1 cm cubes. The total surface area of all the small cubes=_____cm2.

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Important Questions on Surface Area and Volume of a Cuboid and Cube

MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 8
The length of a hall is 18 m and the width 12 m. The sum of the areas of the floor and the flat roof is equal to the sum of the areas of the four walls. If the height of the hall is k m, find k.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 9
Hameed has built a cubical water tank with lid for his house, with each other edge 1.5 m long. He gets the outer surface of the tank excluding the base, covered with square tiles of side 25 cm. Find how much he would spend for the tiles, if the cost of tiles is ₹ 360 per dozen.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 10
Each edge of a cube is increased by 50%. Find the percentage increase in the surface area of the cube.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 11
A closed iron tank 12 m long, 9 m wide and 4 m deep is to be made. Determine the cost of iron sheet used at the rate of ₹ 5 per metre sheet, sheet being 2 m wide.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 12
Ravish wanted to make a temporary shelter for his car by making a box-like structure with tarpaulin that covers all the four sides and the top of the car ( with the front face as a flap which can be rolled up). Assuming that the stitching margins are very small, and therefore negligible, to make the shelter of height 2.5 m with base dimensions 4 m×3 m tarpaulin would be required=_____ m2.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 13
An open box is made of wood 3 cm thick. Its external length, breadth and height are 1.48 m, 1.16 m and 8.3 dm. Find the cost of painting the inner surface of ₹ 50 per sq- meter.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 14
The dimensions of a room are 12.5 m by 9 m by 7 m. There are 2 doors and 4 windows in the room; each door measures 2.5 m by 1.2 m and each window 1.5 m by 1 m. Find the cost of painting the walls at ₹ 3.50 per square meter.
MEDIUM
9th CBSE
IMPORTANT
Mathematics Class 9>Chapter 18 - Surface Area and Volume of a Cuboid and Cube>EXERCISE>Q 15
The paint in a certain container is sufficient to paint on area equal to 9.375 m2, How many bricks of dimension 22.5 cm×10 cm×7.5 cm can be painted out of this container?