The radius of a right circular cylinder is four times of its height. If the height of the cylinder is 14 cm, then what is the volume of cylinder?

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

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

A cylindrical container of 32 cm height and 18 cm radius is filled with sand. Now all this sand is used to form a conical heap of sand. If the height of the conical heap is 24 cm, what is the radius of its base? 

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

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 volume of a cube to that of a sphere which will fit inside the cube 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?