Advertisements
Advertisements
प्रश्न
A right circular cylinder just encloses a sphere of radius r units. Calculate the curved surface area of the cylinder
उत्तर
C.S.A of cylinder
= 2πr × h
= 2πr × 2r
= 4πr2 sq.units
APPEARS IN
संबंधित प्रश्न
Water flows at the rate of 15 m per minute through a cylindrical pipe, having the diameter 20 mm. How much time will it take to fill a conical vessel of base diameter 40 cm and depth 45 cm?
A farmer connects a pipe of internal diameter 20 cm from a canal into a cylindrical tank which is 10 m in diameter and 2 m deep. If the water flows through the pipe at the rate of 4 km per hour, in how much time will the tank be filled completely?
A vessel is in the form of a hemispherical bowl mounted by a hollow cylinder. The diameter is 14 cm and the height of the vessel is 13 cm. Find the capacity of the vessel
A solid consisting of a right circular cone of height 12 cm and radius 6 cm standing on a hemisphere of radius 6 cm is placed upright in a right circular cylinder full of water such that it touches the bottom. Find the volume of the water displaced out of the cylinder, if the radius of the cylinder is 6 cm and height is 18 cm
As shown in the figure a cubical block of side 7 cm is surmounted by a hemisphere. Find the surface area of the solid.
A right circular cylinder just encloses a sphere of radius r units. Calculate the surface area of the sphere
A hollow metallic cylinder whose external radius is 4.3 cm and internal radius is 1.1 cm and the whole length is 4 cm is melted and recast into a solid cylinder of 12 cm long. Find the diameter of a solid cylinder
Find volume of solid generated by revolving parabola y2. = 4ax, cut of by latus rectum, about tangent at vertex.
A cylinder and a cone have equal bases. The height of the cylinder is 2 cm and the area of its base is 64 cm2. The cone is placed upon the cylinder volume of the solid figure so formed is 400 cm3. Find the total height of the figure.
An ice cream pot has a right circular cylindrical shape. The radius of the base is 12 cm and the height is 7 cm. This pot is completely filled with ice cream. The entire ice cream is given to the students in the form of right circular ice cream cones, having a diameter of 4 cm and a height is 3.5 cm. If each student is given one cone, how many students can be served?
