The central angle of a circle is divided in the ratio `2:3` to form two sectors. Two cones are made by rolling up the two sectors.Find out the ratio between the base perimeters of the cones.

The central angle of a circle is divided in the ratio 2:3 to form two sectors. Two cones are made by rolling up the two sectors.What is the ratio between the curved surface areas.

The central anglé of a sector is 288^circ . If this sector is rolled up to make a cone, Fnd the ratio between the radius and slant height of the cone.

A sector of radius 12 centimetres and central angle 120^o is rolled up into a cone.Find the radius and the height of the cone.

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.Calculate the area of this sector.

A cicular sheet of paper is devided into two sectors. Central angle of one of them is 160^o .If the radius of the small cone is 8 centimetres What is the slant height of the cones?

If two positive numbers are in the ratio of 3 + 2 sqrt2 : 3- 2 sqrt2 then the ratio between their AM and GM is

One angle of a triangle is equal to the sum of the other two angles of that triangle. The two smaller angles are in the ratio 2:3. What are the angles of triangle?

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?