In a cylinder, if radius is halved and height is doubled, then the volume will be

The cost of construction a wall whose dimensions are $8m\times 4m\times 208\backslash ,m\backslash times4\backslash ,m\backslash times20\backslash ,$cm at the rate of Rs. 25 per $m^{3}m^3$ is

If the area of the equilateral triangle $8\sqrt{3}8\backslash sqrt\{3\}$ $c{m}^{2}cm^2$, then its perimeter is in cms

Which of the following represents the flat surface area of hemisphere ?

The curved surface area of a cylinder having r = x cm, h = y cm is …… $c{m}^{2}cm^2$

The ratio of volumes of cylinder and cone having same radii and heights

In a Rhombus the lengths of two diagonals are 10 cm and 13 cm then it’s area is…

A toy rocket is like a cone exactly mounted on a cylinder the vertical cross-section of the toy is

In a cyclic quadrilateral one set of opposite angles are in the ratio of 2 : 3, then the angles are

From a metal sheet which is in the shape of a circle a biggest square with 10 cm as side was taken. Then the radius of the circle is (in cms)