If the volume of a sphere is , then its radius is
Base area of a right circular cylinder is 80cm2 . If its height is 5cm, then the volume is equal to
400cm3
16cm3
200cm3
The total surface area of a solid hemisphere whose radius is a units, is equal to
2 π a2sq.units
3π a2sq.units
3π a sq.units
3 a2sq.units
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
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
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 whole surface of a cube is 384cm2 . Find its volume.
384√6 cm3
64cm3
512cm3
96cm3
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
The surface areas of two spheres are in the ratio of 9 : 25. Then their volumes are in the ratio
81 : 625
759 : 15625
27 : 75
27 : 125
If the total surface area of a solid right circular cylinder is 200πcm2 and its radius is 5 cm, then the sum of its height and radius is
20cm
25cm
30cm
15cm