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CBSE Class 9 Answered

the no. of bricks, each measurin18 cm ,12cm,10cm are required to build a wall 12m,0.6m,4.5m if 1/10 of its volume is taken by mortar is..
Asked by leya mathews | 12 Feb, 2011, 15:13: PM
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Answered by | 13 Feb, 2011, 11:15: AM

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CBSE 9 - Maths
find the volume of food of a closed box whole external dimension are 50 cm ×30 cm ×25 cm and thickness of the wood pluck is 2 cm also find the weight of the box if diversity of wood is 0.05 g cm
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the cap of a joker is conical in which 30.8 sq.cm of cloth is used . Also the circumference of its base is 17.6 cm .(i) find the height if the cap. (ii)find the slant height of the cap (iii)find the radius of the base of the cap (iv) what is the volume of the cone ?(leave the answer in pie)
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CBSE 9 - Maths
the total surface area of hollow metal cylinder open at both ends of a internal radius 8cm and height 10cm is 388?cm²(ignoring the area of rims ).find the thickness of the metal in the cylinder
Asked by titub5397 | 18 Dec, 2023, 09:05: AM
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CBSE 9 - Maths
if the volume of a cone is 7546cm³ and its height is 21cm find its curved surface area
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CBSE 9 - Maths
A sphere is perfectley encloused inside a cube of volume 36cm cube.find the volume of sphere
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CBSE 9 - Maths
25 The "Caring old people organisation"  needs money to build the old age home which requires 164000 bricks.  Bricks measure 10 cm?8 cm? 4 cm and cost of brick depends on its volume at the rate of ` 1 per 100 cm3.  It requires 4 cylindrical cans of paint of radius 14 cm and height 30 cm.  The cost of paint is ` 1 per 20 cm3.  How much money is required by organisation ?  If “A company gives the money to organization” then, what common value is depicted by A company and organisation.
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CBSE 9 - Maths
To find formula for the curved serface area of right circullar cylender expermentally
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CBSE 9 - Maths
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The radii of two cones are equal. If their slant heights are in the ratio 5:8, find the ratio of their curved surface area.
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CBSE 9 - Maths
curved surface area of a cone is 308 cm2 and it's slant height is 14 cm find (i) radius of the base and (ii)total surface area of the cone
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