Advertisements
Advertisements
प्रश्न
A right circular cylinder of radius r and height h (h = 2r) just encloses a sphere of diameter
विकल्प
h
r
2r
2h
उत्तर
Radius of cylinder = r
Height = h
= 2r
Since, the sphere fitted the cylinder.
i.e., diameter of sphere = height of cylinder.
`d = h = 2r`
`d = 2r`
संबंधित प्रश्न
A container shaped like a right circular cylinder having diameter 12 cm and height 15 cm is full of ice cream. The ice cream is to be filled into cones of height 12 cm and diameter 6 cm, having a hemispherical shape on the top. Find the number of such cones which can be filled with ice cream.
A tent is of the shape of a right circular cylinder upto a height of 3 metres and then becomes a right circular cone with a maximum height of 13.5 metres above the ground. Calculate the cost of painting the inner side of the tent at the rate of Rs 2 per square metre, if the radius of the base is 14 metres.
A solid cylinder of diameter 12 cm and height 15 cm is melted and recast into toys with the shape of a right circular cone mounted on a hemisphere of radius 3 cm.If the height of the toy is 12 cm, find the number of toys so formed.
The radii of the ends of a bucket 16 cm height are 20 cm and 8 cm. The curved surface area of the bucket is
A cylindrical bucket, 32 cm high and with radius of base 18 cm, is filled with sand. This bucket is emptied out on the ground and a conical heap of sand is formed. If the height of the conical heap is 24 cm, find the radius and slant height of the heap.
A right circular cylinder of radius r cm and height h cm (h > 2r) just encloses a sphere of diameter ______.
A solid cylinder of radius r and height h is placed over other cylinder of same height and radius. The total surface area of the shape so formed is ______.
The total surface area of a hemispherical solid having radius 7 cm is ______.
Water flows at the rate of 10m/minute through a cylindrical pipe 5 mm in diameter. How long would it take to fill a conical vessel whose diameter at the base is 40 cm and depth 24 cm?
16 glass spheres each of radius 2 cm are packed into a cuboidal box of internal dimensions 16 cm × 8 cm × 8 cm and then the box is filled with water. Find the volume of water filled in the box.
