The ratio between the radius and slant height of a cone is '2: 3'.
Find the central angle of the sector to make thẻ cone.

Find the ratio between the radius and slant height of a cone by rolling up a sector with central angle 120^circ . If the curved surface area is '108 pi'. - Find the radius and slant height of the cone.

The base radius of a cone made by rolling up a sector is 3 centimetres. Its slant height is 15 centimetres.What is the central angle of the sector?

What is the ratio of the base-radius and slant height of a cone made by rolling up a semicircle?

Area of a circle'is 625 pi sq.cm and area of a sector in this circle is 125 pi sq.cm . i) Find the central angle of the sector. ii) Find the arc length of the sector. iii) Find the perimeter of the sector.

The base radius of a cone made by rolling up a sector is 3 centimetres. Its slant height is 15 centimetres.What is the radius of the sector used to make the cone?

What are the radius of the base and slant helght of a cone made by rolling up a sector of central angle 60^circ and of radius 10 centimetres cut out from a circle?

If the length of an arc of a sector having radius 9 cm is 2 pi cm , then find the central angle of the sector?

Sand is pouring from a pipe. The falling sand forms a Cone on the ground in such a way that the height of the Cone is always one-sixth of the radius of the base. if the sand is pouring at the rate of 12 cm^3 /s ,Find the rate of change of height of the Cone.

The radius and height if a cone are 12 centimetres and 6 centimetres respectively. What is the volume of the small cone?

From a bangle of radius 3 centimeters, a piece is to be cut out to make a ring of radius 1/2 centimeters. i) What should be the central angle of the piece to be cut out? ii) The remaining part of the bangle was: bent to make a smaller bangle. What is its radius?