उपनिषद् :Upanishads संघ: Federation संस्था: Institution
A right triangle ABC with sides 9 cm ,12cm and 15cm is revolved about the side 12 cm. What is the volume of the solid so obtained?
A well 20m in diameter is dug 14m deep and the earth taken out is spread all around it to a width of 5m to form an embankment. The height of the embankm...
If x = (√5-√3) / (√5+√3) and y is reciprocal of x. then what is the value of √(x3 + y3)?
If the volume of a cylinder is 196π and the ratio of radius to its height is 7:4 then find the curved surface area of cylinder?
The ratio of length to breadth of a rectangle is 5:4. If the sum of the length and breadth of the rectangle is 36 cm, then find the area (cm2...
The area of two similar triangles is 400 cm² and 324 cm², respectively. What is the ratio of their corresponding altitudes?
The ratio of length to breadth of a rectangle is 8:5. When the length and breadth of the rectangle is increased by 22% and decreased by 30% respectively...
In the given figure, ABCD is a trapezium and AB!! DC. If OD = 3cm, OC = (x – 5) cm, OB = (3-x) cm and OA = (3x – 19) cm, then which Can the followin...
A wooden box measures 20cm by 12cm by 10cm. Thickness of wood is 1 cm. volume of wood to make the box is.(in cm 3 )
Outer diameter of 20 cm long pipe is 25 cm. If the thickness of the metal in the pipe is 1 cm. Find the total surface area of the pipe?
