NCERT Solutions for Class 8 Maths Chapter 11 Mensuration Ex 11.3 are part of NCERT Solutions for Class 8 Maths. Here we have given NCERT Solutions for Class 8 Maths Chapter 11 Mensuration Ex 11.3.
|Number of Questions Solved||10|
NCERT Solutions for Class 8 Maths Chapter 11 Mensuration Ex 11.3
There are two cuboidal boxes as shown in the adjoining figure. Which box requires the lesser amount of material to make?
A suitcase with measures 80 cm x 48 cm x 24 cm is to be covered with a tarpau¬lin cloth. How many meters of tarpaulin of width 96 cm is required to cover 100 such suitcases?
Find the side of a cube whose surface area is 600 .
Let the side of the cube be a cm.
Then, Total surface area of the cube = 6
According to the question,
⇒ = 100
⇒ a =
⇒ a = 10 cm
Hence, the side of the cube is 10 cm.
Rukhsar painted the outside of the cabinet of measure 1 m x 2 m x 1.5 m. How much surface area did she cover if she painted all except the bottom of the cabinet?
Daniel is painting the walls and ceiling of a cuboidal hall with length, breadth, and height of 15 m, 10 m and 7 m respectively. From each can of paint 100 of area is painted.
How many cans of paint will she need to paint the room?
l = 15 m
b = 10 m
h = 7 m
Surface area to be painted
Hence, she will need 5 cans of paint to paint the room.
Describe how the two figures at the right are alike and how they are different. Which box has a larger lateral surface area?
Similarity → Both have the same heights.
Difference → One is a cylinder, the other is a cube;
The cylinder is a solid obtained by revolving a rectangular area about its one side whereas a cube is a solid enclosed by six square faces; a cylinder has two circular faces whereas a cube has six square faces.
A closed cylindrical tank of radius 7 m and height 3 m is made from a sheet of metal. How many sheets of metal is required?
The lateral surface area of a hollow cylinder is 4224 . It is cut along its height and formed a rectangular sheet of width 33 cm. Find the perimeter of rectangular sheet?
Lateral surface area of the hollow cylinder = 4224
A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1 m.
Diameter of the road roller = 84 cm
A company packages its milk powder in the cylindrical container whose base has a diameter of 14 cm and height 20 cm. The company places a label around the surface of the container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the label?
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