A sphere of radius r has the same volume as that of a cone with a circular base of radius r. Find the height of the cone.
2r
3r
4r
6r
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 volume of a sphere is , then its radius is
The curved surface area of a right circular cylinder of radius 1cm and height 1cm is equal to
πcm2
2πcm2
3πcm2
2cm2
The ratio of the volumes of two cones is 4 : 5 and the ratio of the radii of their bases is 2 : 3. Find the ratio of their vertical heights.
8 : 5
6 : 5
9 : 5
7 : 5
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 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
Base area of a right circular cylinder is 80cm2 . If its height is 5cm, then the volume is equal to
400cm3
16cm3
200cm3
If the total surface area of a solid hemisphere is 12πcm2 then its curved surface area is equal to
6πcm2
24πcm2
36πcm2
8πcm2
The curved surface area of a cone is 4070 cm2 and its diameter is 70cm. What is its slant height
37 cm
25 cm
22 cm
27 cm
