Two right circular cones have equal radii. If their slant heights are in the ratio 4 : 3, then their respective curved surface areas are in the ratio
16 : 9
8 : 6
4 : 3
3 : 4
If the diameter and height of a right circular cone are 12cm and 8cm respectively, then the slant height is
10cm
20cm
30cm
96cm
If the surface area of a sphere is 36πcm2 , then the volume of the sphere is equal to
12πcm3
36πcm3
72πcm3
108πcm3
Radius and height of a right circular cone and that of a right circular cylinder are respectively, equal. If the volume of the cylinder is 120cm3 , then the volume of the cone is equal to
1200cm3
360cm3
40cm3
90cm3
The diameters of the two cones are equal. If their slant heights are in the ratio of 5 : 4, find the ratio of their curved surface areas.
3 : 2
5 : 4
2 : 5
If the circumference at the base of a right circular cone and the slant height are 120πcm and 10cm respectively, then the curved surface area of the cone is equal to
1200πcm2
600πcm2
300πcm2
600cm2
The radii of two cylinders are in the ratio of 2 : 3 and their heights are in the ratio of 5 : 3. Find the ratio of their volumes.
9 : 4
4 : 9
27 : 20
20 : 27
The ratios of the respective heights and the respective radii of two cylinders are 1 : 2 and 2 : 1 respectively. Then their respective volumes are in the ratio
4 : 1
1 : 4
2 : 1
1 : 2
The curved surface area of a right circular cylinder of radius 1cm and height 1cm is equal to
πcm2
2πcm2
3πcm2
2cm2
The curved surface of a cone of base radius and slant height l is
π r l
π r2 l
2π r l
π r l(l + r)
