The perimeter of the one face of a cube is 20 cm. Then its volume must be
125 cm3
400 cm3
1000 cm3
8000 cm3
A hemisphere bowl has a radius of 3.5 cm. The volume of the water it would contain is
88.9 cm3
89.8 cm3
88 cm3
90 cm3
If each edge of a cube is increased by 50% then the percentage increase in its surface area is
50%
100%
125%
150%
The surface area of two spheres are in the ratio 1:4. then the ratio of their volume is
1 : 2
1 : 4
1 : 8
1 : 16
The maximum length of the longest rod that can be placed in a rectangular box of dimensions 8 cm * 6 cm * 2 cm is
2√13 cm
2√14 cm
2√26 cm
10√2 cm
The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?
1/4
1/16
1/64
1/36
A hemispherical tank is made up of an iron sheet 1 cm thick. If the inner radius is 1 m, then the volume of the iron used to make the tank is
0.06343 m3
1.06343 m3
0.06686 m3
none of these
The edge of the cuboid are in the ratio 1 : 2 : 3 and its surface area is 88 cm2 . Then the volume of the cuboid is
24 cm3
48 cm3
64 cm3
120 cm3
A cone, a hemisphere and a cylinder stand on equal bases and have the same height. The ratio of their volume is
1:2:3
1:3:5
2:4:5
1:2:4
The diagonal of a cube is 6√3 cm. Then its volume is
216 cm3
64 cm3
144 cm3
136 cm3
A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be
The edge of a cube is 20 cm. How many small cubes of 5 cm edge can be formed from this cube?
A metallic right circular cone of height 9 cm and base radius 7 cm is melted into a cuboid whose two sides are 11 cm and 6 cm. What is the third side of the cuboid?
A metallic right circular cone of height 9 cm and base radius 7 cm is melted into a cuboid whose two sides are 11 cm and 6 cm. What is the third side of the cuboid?