The position vector `oversetto(OA)` of point A `(7m,3m,0)` is rotated about `y-`axis. Find the volume `("in" m^(3))` of the cone thus formed `:("Take": pi=22/7)`.

A rectangular metal sheet of area 2 m^(2) is rolled to a cylinder of volume (4//pi) m^(3) . The radius of the cylinder thus formed is "_____" m

Find the volume of a sphere of radius 21 cm. (Take pi =22/7)

A rectangular strip 25 c m\ x\ 7c m is rotated about the longer side. Find the total surface area of the solid thus generated.

A rectangular strip 25 c m\ x\ 7c m is rotated about the longer side. Find the total surface area of the solid thus generated.

A rectangular strip 25 c m\ x\ 7c m is rotated about the longer side. Find the total surface area of the solid thus generated.

Find the area of the following circles, given that: diameter=49m (Take pi=22/7 )

The volume of a solid sphere is "4851 m"^(3) . What is the surface area of the sphere?(Take pi=(22)/(7) )

For a cone ,radius =1.4 cm and height =6cm . Find the volume of the cone. (pi=(22)/(7))

A toy is in the form of a cone mounted on a hemisphere of radius 7 cm. The total height of the toy is 14.5 cm. Find the volume of the toy. (Take pi = 22/7)

A toy is in the form of a cone mounted a hemisphere of diameter 7 cm. the total height of the toy is 14.5 cm. find the volume and the total surface area of the toy. (Take pi=(22)/(7) ).