| Of the vertical surface of a long circular cone Numerical value of volume and area are equal. If the height of the cone and If the radius is, then the value of + is- (A) (B), (C): (D)

If the volume and lateral surface of a right circular cone are numarically equal and the height and base radius of the cone are h and r respectively, then the value of (1)/(r^2) + (1)/(h^2) is

The numerical values of the volume and the lateral surface area of a right circular cone are equal. If the height and the radius of the cone are h unit and r unit respectively , then find the value of (1)/(h^2)+(1)/(r^2) .

Semi - vertical angle of a right circular cone is 30^@ . If the ratio of the numerical value of the volume and slant surface area be 1:3 , the radius of the base is

The curved surface area of a right circular cone of radius 14 cm is 440 sq cm. What is the slant height of the cone?

If the volume of a right circular cone be 450 c c and the area of its base be 150 sq-cm, then what will be the height of the cone ?

The numerical value of the whole surface area of a right circular cone and the volume are equal. If the slant height , height and radus of base of the cone be l unit , h , unit and r unit respectively , then prove that 9h=r^2(h-6) .

The radius of a sphere is equal to the radius of the base of a right circular cone,and the volume of the sphere is double the volume of the cone.The ratio of the height of the cone to the radius of its base is (a) 2:1quad (b) 1:2 (c) 2:3quad (d) 3:2

The curved surface area of a right circular cone is sqrt(5) times of its base area . Find the ratio of the height and the length of radius of the cone.

The area of curved surface of a right circular cone is sqrt 5 times that of the base of the cone, find the fatio of the height and the radius of the base of the cone.