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CBSE Class 10 Answered

14. From a solid cylinder of height 12 cm and base diameter 10 cm, a conical cavity with the same height and diameter is carved out. Find the volume of the remaining solid. 15. A building is in the form of a cylinder surmounted by a hemispherical dome as shown in the figure. The base diameter of the dome is equal to 2 3 of the total height of the building. Find the height of the building, if it contains 67 1 27 m3 of air. [2011 (T-II)] 16. A heap of rice is in the form of a cone of diameter 9 mand height 3.5 m. Find the volume of the rice. Howmuch canvas cloth is required to just cover the heap? 17. 500 persons are taking a dip into a cuboidal pond which is 80 m long and 50 m broad.What is the rise of water level in the pond, if the average displacement of the water by a person is 0.04 m3. 18. A rocket is in the form of a right circular cylinder closed at the lower end and surmounted by a cone with the same radius as that of the cylinder. The diameter and height of the cylinder are 6 cmand 12 cmrespectively. If the slant height of the conical portion is 5 cm, find the total surface area and volume of the rocket. (Take ? = 3.14)
Asked by swetha | 01 Jan, 2014, 08:34: PM
answered-by-expert Expert Answer
Please ask one question at a time. The answer to your first question is as follows:
 
Answered by | 01 Jan, 2014, 09:50: PM

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CBSE 10 - Maths
what is cone surface area
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CBSE 10 - Maths
find the height of largest right circular cone that can be cut out of a cube whose volume is 729 cm³
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CBSE 10 - Maths
a company wanted to manufacture 1000 hemispheres basins from thin steel sheet radius is 21 cm find the required area of steel sheet manufacturers the above hemispherical basins
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CBSE 10 - Maths
A rocket is in the form of circular closed at the ler end and a cone of same radius is attached to the top.The radius of the clylinder is 2.5m ,it's height is 21m and the slant height of the cone is 8m Find the T.S.A of rocket
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CBSE 10 - Maths
a wooden toy rocket is in the shape of cone mounted on a cylinder. The height of the entire rocket is 15 cm, while the height of the conical part is 4 cm. The base of the conical portion has a diameter of 6 cm, while the base diameter of the cylindrical portion is 4 cm. If the conicle portion is painted green and the cylindrical portion is painted blue, find the area of the rocket. (use π=3.14)
Asked by shivalaxmi0205 | 05 Sep, 2023, 06:55: PM
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CBSE 10 - Maths
A golf ball is spherical with about 300 - 500 dimples that help increase its velocity while in play. Golf balls are traditionally white but available in colours also. In the given figure, a golf ball has diameter 4-2 cm and the surface has 315 dimples (hemi-spherical) of radius 2 mm. Based on the above, answer the following questions: (i) Find the surface area of one such dimple. (ii) Find the volume of the material dug out to make one dimple. Find the total surface area exposed to the surroundings.
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CBSE 10 - Maths
If radius of the base of cone is 7 cm and height is 24 cm, then find its slant height. (A) 23 cm  (B) 26 cm  (C) 31 cm  D) 25 cm
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CBSE 10 - Maths
8th one
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Asked by pentikalyanram | 22 Dec, 2022, 08:12: PM
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CBSE 10 - Maths
3. A glass cylinder with radius 10 cm has water to a height of 9 cm. A metal cube of 8 cm edge is immersed in it completely. Calculate the height by which water will rise in the cylinder. Use =22/7
Asked by rajsingh94116633 | 04 May, 2022, 10:06: AM
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CBSE 10 - Maths
A conical tank with base radius 20 cm and height 40 cm is initially filled with water. Water drains through a small round hole at the bottom with a diameter of 1cm. Find an expression for the height of water in the tank at time t  
Asked by anitajoshi0912 | 22 Dec, 2021, 09:12: AM
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