The diameters of two cylinders are in the ratio 3:2 and their volumes are equal. The ratio of their heights is

The radius of a wire is decreased to one third. If volume remains the same, length will increase by :

The ratio of the volume of a cube to that of a sphere which will fit inside the cube is

A circle circumscribes a rectangle with sides 16 cm and 12 cm. What is the area of the circle?

In an isosceles triangle, the measure of each of equal sides is 10 cm and the angle between them is 45°. the area of the triangle is

The ratio of the side and height of an equilateral triangle is –

How many hemispherical balls can be made from a cylinder 56 cm high and 12 cm diameter, when every ball being 0.75 cm in radius? 

The area of an equilateral triangle is 25√3 cm², then its perimeter is –