cbse class 10th Archives - Page 10 of 19

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A solid metal cone with base radius of 12 cm and height 24 cm is melted to form solid spherical balls of diameter 6 cm each. Find the number of balls thus formed

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In the given problem cone shape is given to find answer of this question need use cone volume formula and ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

Metallic spheres of radii 6 cm, 8 cm and 10 cm, respectively are melted to form a single solid sphere. Find the radius of the resulting sphere

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Problem was asked in 2012 cbse board exam. Problem from RS Aggarwal book problem number 3, exercise 17B, chapter volume ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A cone of height 20 cm and radius of base 5 cm is made up of modelling clay. A child reshapes it in the form of a sphere. Find the diameter of the sphere

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This is the important problem for cbse board exam last time in 2011 this problem was asked. Problem number 2 ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A solid metallic cuboid of dimensions 9 m × 8 m × 2 m is melted and recast into solid cubes of edge 2 m. Find the number of cubes so formed.

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Last time this problem was asked in 2017 cbse board exam. Question number 1 in RS Aggarwal book page number ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A wooden toy is in the shape of a cone mounted on a cylinder, as shown in the figure. The total height of the toy is 26 cm, while the height of the conical part is 6 cm. The diameter of the base of the conical part is 5 cm and that of the cylindrical part is 4 cm. The conical part and the cylindrical part are respectively painted red and white. Find the area to be painted by each of these colors.

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This problem is the combination of two shape that is cone and cylinder. In the given problem use π = ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

The inner diameter of a glass is 7 cm and it has a raised portion in the bottom in the shape of a hemisphere, as shown in the figure. If the height of the glass is 16 cm, find the apparent capacity and the actual capacity of the glass

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In the given problem shape of solid is cylinder. To find answer of this problem use cylinder volume formula. problem ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A toy is in the shape of a right circular cylinder with a hemisphere on one end and a cone on the other. The radius and height of the cylindrical part are 5 cm and 13 cm, respectively. The radii of the hemispherical and the conical parts are the same as that of the cylindrical part. Find the surface area of the toy, if the total height of the toy is 30 cm.

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Problem from RS Aggarwal book page number 289, exercise 17A, chapter volume and surface area of solid.

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A cubical block of side 10 cm is surmounted by a hemisphere. What is the largest diameter that the hemisphere can have? Find the cost of painting the total surface area of the solid so formed, at the rate of 5 per 100 sq cm.

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In this problem use π = 3.14. Last time this problem was asked in cbse 2015 board exam. Question number ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

A hemisphere of maximum possible diameter is placed over a cube block of side 7 cm. Find the surface area of the solid so formed.

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Last time this problem was asked in cbse 2017 board exam. Question number 29 [i] from RS Aggarwal book page ...Read more

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Deepak BoraNewbie

Asked: August 8, 2020In: CBSE

From a cubical piece of wood of side 21 cm, a hemisphere is carved out in such a way that the diameter of the hemisphere is equal to the side of the cubical piece. Find the surface area and volume of the remaining piece.

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This is important problem from the cbse board exam point of view because this problem was last asked in 2014 ...Read more

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