Mensuration Tes...

The number of dimensions, a solid has :

In a cylinder, radius is doubled and height is halved, curved surface area will

If the perimeter of one face of a cube is $$20\: cm$$, then its surface area is

The ratio of the height of a  circular cylinder to the  diameter of its base is $$1 : 2$$,  then the ratio of the areas of  its curved surface to the sum  of the areas of its two ends is 

If the radius of the base of a cylinder is $$2$$ cm and its height $$7$$ cm, then its curved surface is

If the curved surface of a  cylinder be doubled the area of  the ends, then the ratio of  its height and radius is

If the curved surface of a right circular cylinder is $$1760 cm^2$$ and its radius is 21 cm, then its height is $$\dfrac {80}{3} cm.$$

A sphere has the same curved surface as the total surface area of cylinder of  height 4 cm and diameter of base 8 cm. The radius of the sphere is

Given dimensions of a cuboid as $$ l = 3\ cm, b = 2\ cm$$ and $$h = 1\ cm.$$ Find the volume.

A tent is in the form of a right circular cylinder, surmounted by a cone. The diameter of the cylinder is $$24$$ m. The height of the cylindrical portion is $$11$$ m, while the vertex of the cone is $$16$$ m above the ground.