Fill in the blanks.
(i) A sphere is placed inside the cylinder and touches all the faces of cylinder, then ratio of the volume of cylinder to the volume of sphere is `underline(" P ")`
(ii) `underline(" Q ")` bricks will be required to construct a wall 10 m long, 6 m high and 22.5 cm thick, if each brick measures 25 cm by 12 cm by 9 cm.
(iii) The largest sphere is carved out of a cube of side 7 cm. Then the volume of the sphere is `underline(" R " )`.
Curved surface area of the hollow cylinder of radii `r_1 and r_2` and height `h` is `underline(" S ")`.

Answer

D