NCERT Class 8
29. A cube of side 4 cm is painted on all its sides. If it is sliced in 1 cubic cm cubes, then number of such cubes that will have exactly two of their faces painted is __________.
10
Aug
29. A cube of side 4 cm is painted on all its sides. If it is sliced in 1 cubic cm cubes, then number of such cubes that will have exactly two of their faces painted is __________. 29. A cube of side 4 cm is painted on all its sides. If it is sliced [...]
28. If R is the radius of the base of the hat, then the total outer surface area of the hat is
10
Aug
28. If R is the radius of the base of the hat, then the total outer surface area of the hat is 28. If R is the radius of the base of the hat then the total outer surface area of the hat is August 10, 2021 Category: Chapter 11 - Mensuration , Maths , [...]
27. Ramesh has three containers. (a) Cylindrical container A having radius r and height h, (b) Cylindrical container B having radius 2r and height 1/2 h, and (c) Cuboidal container C having dimensions r × r × h The arrangement of the containers in the increasing order of their volumes is
10
Aug
27. Ramesh has three containers. (a) Cylindrical container A having radius r and height h, (b) Cylindrical container B having radius 2r and height 1/2 h, and (c) Cuboidal container C having dimensions r × r × h The arrangement of the containers in the increasing order of their volumes is (b) Cylindrical container B [...]
26. The surface areas of the six faces of a rectangular solid are 16, 16, 32, 32, 72 and 72 square centimetres. The volume of the solid, in cubic centimetres, is
10
Aug
26. The surface areas of the six faces of a rectangular solid are 16, 16, 32, 32, 72 and 72 square centimetres. The volume of the solid, in cubic centimetres, is 16 … 26. The surface areas of the six faces of a rectangular solid are 16 3^2 72 and 72 square centimetres. The volume [...]
25. Two cubes have volumes in the ratio 1:64. The ratio of the area of a face of first cube to that of the other is
10
Aug
25. Two cubes have volumes in the ratio 1:64. The ratio of the area of a face of first cube to that of the other is 25. Two cubes have volumes in the ratio 1:64. The ratio of the area of a face of first cube to that of the other is August 10, 2021 [...]
24. The ratio of radii of two cylinders is 1: 2 and heights are in the ratio 2:3. The ratio of their volumes is
10
Aug
24. The ratio of radii of two cylinders is 1: 2 and heights are in the ratio 2:3. The ratio of their volumes is 24. The ratio of radii of two cylinders is 1: 2 and heights are in the ratio 2:3. The ratio of their volumes is August 10, 2021 Category: Chapter 11 - [...]
23. A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood is
10
Aug
23. A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood is 23. A covered wooden box has the inner measures as 115 cm 75 cm and 35 cm and thickness of wood as 2.5 cm. The [...]
22. Three cubes of metal whose edges are 6 cm, 8 cm and 10 cm respectively are melted to form a single cube. The edge of the new cube is
10
Aug
22. Three cubes of metal whose edges are 6 cm, 8 cm and 10 cm respectively are melted to form a single cube. The edge of the new cube is 22. Three cubes of metal whose edges are 6 cm 8 cm and 10 cm respectively are melted to form a single cube. The edge [...]
21. A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The side of the cube is
10
Aug
21. A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The side of the cube is 21. A metal sheet 27 cm long 8 cm broad and 1 cm thick is melted into a cube. The side of the cube is August 10, 2021 Category: Chapter [...]
20. Area of a quadrilateral ABCD is 20 cm^2 and perpendiculars on BD from opposite vertices are 1 cm and 1.5 cm. The length of BD is
10
Aug
20. Area of a quadrilateral ABCD is 20 cm^2 and perpendiculars on BD from opposite vertices are 1 cm and 1.5 cm. The length of BD is 20. Area of a quadrilateral ABCD is 20 cm^2 and perpendiculars on BD from opposite vertices are 1 cm and 1.5 cm. The length of BD is August [...]