Practice Volume and Surface Area – A cylindrical rod of iron, whose height is equal to its radius, is melted and cast into spherical balls whose radius is half the radius of the rod. Find the number of balls.
Practice Volume and Surface Area – If the radius of base and height of a cone are increased by 10%, find the percentage of increase of its volume
Practice Volume and Surface Area – Find the surface area of a cuboid 16 m long, 14 m broad and 7 m high
Practice Volume and Surface Area – Find the ratio of the surfaces of the inscribed and circumscribed spheres about a cube.
Practice Volume and Surface Area – The height of the wall is 6 times its width and lenght of the wall is 7 times its height .if the volume of the wall be 16128 cu.m.its width is
Practice Volume and Surface Area – 66 cubic centimetres of silver is drawn into a wire 1 mm in diameter. The length of the wire in metres will be: