Advertisements
Advertisements
Question
The curved surface are of a cylinder is 1760 cm2 and its base radius is 14 cm. The height of the cylinder is
Options
10 cm
15 cm
20 cm
40 cm
Solution
20 cm
Curved surface area of the cylinder`= 2pi"rh"`
`=2xx22/7xx14xx"h"`
`=> "h" = 1760/88 "cm"`
`=> "h" = 20 "cm"`
Height, the height of the cylinder is 20 cm.
APPEARS IN
RELATED QUESTIONS
A rectangular sheet of paper 40 cm × 22 cm, is rolled to form a hollow cylinder of height 40 cm. The radius of the cylinder (in cm) is ______.
A metallic sphere of radius 10.5 cm is melted and thus recast into small cones, each of radius 3.5 cm and height 3 cm. Find how many cones are obtained.
Lead spheres of diameter 6 cm are dropped into a cylindrical beaker containing some water and are fully submerged. If the diameter of the beaker is 18 cm and water rises by 40 cm. find the number of lead spheres dropped in the water.
An iron pillar consists of a cylindrical portion 2.8 m high and 20 cm in diameter and a cone 42 cm high is surmounting it. Find the weight of the pillar, given that 1 cubic cm of iron weighs 7.5 gm.
A cylindrical vessel of radius 4 cm contains water. A solid sphere of radius 3 cm is lowered into the water until it is completely immersed. The water level in the vessel will rise by
The volume of a cube is 2744 cm2. Its surface area is
The curved surface area of a cylindrical pillar is 264 m2 and its volume is 924 m3. The height of the pillar is
The dimensions of a metallic cuboid are 44 cm × 42 cm × 21 cm. it is molten and recast into a sphere. Find the surface area of the sphere.
Arrange the given objects according to their volume
Arrange the given objects according to their volume
