The curved surface area of a right circular cylinder whose radius is 'a' units and height is 'b' units, is equal to
πa2b sq.cm
2πab sq.cm
2π sq.cm
2 sq.cm
If the radius of a sphere is half of the radius of another sphere, then their respective volumes are in the ratio
1 : 8
2 : 1
1 : 2
8 : 1
If the total surface area of a solid hemisphere is 12πcm2 then its curved surface area is equal to
6πcm2
24πcm2
36πcm2
8πcm2
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
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
If the height and the base area of a right circular cone are 5cm and 48sq.cm respectively, then the volume of the cone is equal to
240cm3
120cm3
80cm3
480cm3
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
4 : 3
2 : 5
If the volume and the base area of a right circular cone are 48πcm3 and 12π cm2 respectively, then the height of the cone is equal to
6cm
4cm
10cm
12cm
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
3 : 4
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
