Recent questions tagged class9

In a cylinder radius is doubled and height is halved , curved surface area will be

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A cone of height 9 cm with diameter of its base 18 cm is carved out from a wooden solid sphere of radius 9 cm. The percentage of the wood wasted is

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12 spheres of the same size are made from melting a solid cylinder of 16 cm diameter and 2 cm height. Find the diameter of each sphere

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The surface area of a sphere is same as the curved surface area of a right circular cylinder whose height and diameter are 12 cm each. The radius of the sphere is:

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A hollow spherical metallic ball has an external diameter 6 cm and is 1/2 cm thick. The volume of metal used in the metal is

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The volume of the largest right circular cone that can be cut out of a cube of edge 7 cm is

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The radii of two cones are in ratio 2:1, their volumes are equal. Find the ratio of their heights.

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The slant height of a conical mountain is 2.5 km and the area of its base is 1.54 km square. The height of mountain is :

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The maximum length of a pencil that can he kept is a rectangular box of dimensions 8 cm x 6 cm x 2 cm, is

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A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m cube) is:

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If a right circular cone of height 24 cm has a volume of 1232 cm cube, then the area of its curved surface is

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The curved surface of a right circular cone of height 15 cm and base diameter 16 cm is:

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A hollow iron pipe is 21 cm long and its external diameter is 8 cm.If the thickness of the pipe is 1 cm and iron weights 8g/cm cube, then find the weight of the pipe.

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66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length if the wire in meters will be:

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A cylindrical tank of diameter 35 cm is full of water. If 11 litres of water is drawn off, the water level in the tank will drop by:

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Two right circular cylinders of equal volumes have their heights in the ratio 1:2. Find the ratio of their radii.

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A circular well with a diameter of 2 meters, is dug to a depth of 14 meters. What is the volume of the earth dug out.

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If the volume of two cubes are in the ratio 27:1, the ratio of their edges is

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How many cubes of 10 cm edge can be put in a cubical box of 1m edge.

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The cost of the paint is Rs. 36.50 per kg. If 1 kg of paint covers 16 square feet, how much will it cost to paint outside of a cube having 8 feet each side.

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The perimeter of one face of a cube is 20 cm. Its volume will be:

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A swimming pool 9 m wide and 12 m long is 1 m deep on the shallow side and 4 m deep on the deeper side. Its volume is

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How many bricks, each measuring 25cm11.25cm6cm, will be needed to build a wall 8m6m22.5m

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A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets into it. The mass of the man is :

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A cistern 6 m long and 4 m wide contains water up to a breadth of 1 m 25 cm. Find the total area of the wet surface

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Find the surface area of a 10cm4cm3cm brick

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How many bricks, each measuring 25 cm x 11.25 cm x 6 cm, will be needed to build a wall of 8 m x 6 m x 22.5 cm?

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A large cube is formed from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?

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What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?

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A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:

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The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. Find the ratio of its diameter to its height

asked Aug 27, 2015 by pady_1

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A metallic sheet is of rectangular shape with dimensions 48 m x 36 m. From each of its corners, a square is cut off so as to make an open box. If the length of the square is 8 m, the volume of the box (in m3) is

asked Aug 27, 2015 by pady_1

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A cistern 6m long and 4 m wide contains water up to a depth of 1 m 25 cm. The total area of the wet surface is

asked Aug 27, 2015 by pady_1

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The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface.

asked Aug 27, 2015 by pady_1

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A hollow iron pipe is 21 cm long and its external diameter is 8 cm. If the thickness of the pipe is 1 cm and iron weighs 8 g/cm3, then the weight of the pipe is:

asked Aug 27, 2015 by pady_1

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66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be

asked Aug 27, 2015 by pady_1

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A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of the hall is:

asked Aug 27, 2015 by pady_1

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In a shower, 5 cm of rain falls. The volume of water that falls on 1.5 hectares of ground is:

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A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed is

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If each side of an equilateral triangle is increased by $2\; cm$ then its area increases by $3\sqrt{3} cm^2$. Find the length of each side.

asked Aug 27, 2015 by pady_1

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The perimeter of the right triangle is60 cm, its hypotenuse is 25 cm, Find the area of the triangle.

asked Aug 27, 2015 by pady_1

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The area of the rectangular field is $3584m^2$ and its length is $64m$. A boy runs round the field at the arte of $8km/hr$. How long will he take to go 5 rounds it.

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Find the altitude of an equilateral triangle whose each side is 36cm.

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The base of a parellelogram is twice its height. If the area is 512 cm^2, Find its base and height.

asked Aug 27, 2015 by pady_1

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The area of the trapezium is 352cm^2. The distance between the parellel sides is 16cm,If one of the parellel sides is 25 cm, Find the other.

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The length and width of a rectangular field are in the ratio 3:2, If the area of the field is $3456\;cm^2$. Find the cost of fencing the field at Rs 3.50 per meter.

asked Aug 27, 2015 by pady_1

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The perimeter of the right triangle is 144cm, its hypoteneuse is 65cm, Find the legs of the triangle.

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From a point in the interior of an equilateral triangle perpendiculars are drawn to the three sides of 8cm,10cm and 11cm respectively. Find the area of the traingle.

asked Aug 27, 2015 by pady_1

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The base of a triangular field is $2\large\frac{1}{2}$ times its height. If the cost of turfing it at Rs35 per $100m^2$ is Rs $700$. Find its base.

asked Aug 27, 2015 by pady_1

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A parelleloram , the measure of whose sides are 60m and 25m, has one diagonal odf measure of 65m long.Find the area.

asked Aug 27, 2015 by pady_1

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