How many coins of diameter 1.5 cm and thickness 0.2 cm can be made by melting a right circular metallic solid cylinder of height 10 cm and diameter 4.5cm?

The curve surface area of a right circular cone of height 15cm and base diameter 16 cm is_-

How many silver coins 1.75 cm in diameter and of thickness 2 mm must be melted to form a cuboid of dimension 5.5 cm xx 10 cm xx 55 cm .

The internal and external radii of a hollow sphere are 3 cm and 5 cm respectively. The sphere is melted to form a solid cylinder of height 2 2/3cm . Find the diameter and the curved surface area of the cylinder.

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 solid cylinder of diameter 12 cm and height 15 cm is melted and recast into 12 toys in the shape of a right circular cone mounted on a hemisphere. Find the radius of the hemisphere and total height of the toy, if the height of the conical part is 3 times its radius.

A solid iron pole consists of a cylinder of height 220cm and base diameter 24 cm,which is surmounted by another cylinder of height 60cm and radius 8 cm.Find the mass of the pole,given that 1cm^3 of iron has approximately 8g mass.(use pi=3.14 ).

How many regular pieces of wood of length 2m.breadth 2.5cm and thickness 4 cm.can be obtained from a log of wood of length 6m.,breadths 15cm and thickness 40 cm.?

How many silver coins 1.75 cm in diameter and of thickness 2mm,must be melted to form a cuboid of diamensions 5.5cmxx10cmxx3.5cm ?

Draw a rhombus whose diagonals are 5.2 cm and 6.4 cm

A solid consisting of a right circular cone of height 120cm and radius 60cm standing on a hemisphere of radius 60cm is placed upright in a right circular cylinder full of water such that it touches the bottom.Find the volume of water left in the cylinder if the radius of the cylinder is 60cm and its height is 180cm.