Question
A number is first increased by 30% and then decreased by
30%. The overall change in number is:Solution
ATQ,
From the top of a cliff 100 meter high, the angles of depression of the top and bottom of a tower are 45° and 60° respectively. The height of the towe...
The outer radius of a hollow metallic spherical ball is 12cm while the thickness of the metal used to make it is 8 cm. Find the volume of the metal used...
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?
A Solid Cone of height 18cm diameter of its base 36cm is cut from a wooden Solid sphere of radius 18cm. the percentage of wood wasted is ?
In a rhombus, the ratio of its diagonals is 2:5, and the difference between their lengths is 12 cm. Find its area.
- The radii of two cylinders are in the ratio of 5: 6 and their heights are in the ratio of 4: 3. The ratio of their volume is
The perimeter of 4 squares is 20 cm, 24 cm, 32 cm and 36 cm respectively. What will be the area of the square having perimeter equal to sum of edges of ...
The perimeter of a rectangle is 100% more than perimeter of a square of side 20 cm. If the length of rectangle is 200% more than side of square then fin...
The sum of the total surface areas of two cubes is 1326 cm2. If the product of the length of their edges is 98 cm2, then find the ...
How many spherical bullets can be made out of a lead cylinder 45 cm high and 27 cm radius, each bullet being 3 cm in diameter?
