Q11 of 189 Page 492

of gold is drawn into a wire 0.1 mm in diameter. Find the length of the wire.

Given,


Diameter of wire = 0.1 mm = 0.01 cm


Radius of wire =


Volume of gold = 1 cm3


⇒ πr2h = 1



⇒ h = = 12727.27 cm or 127.27 m


Length of wire = 127.27 meter.


More from this chapter

All 189 →
9

The sum of the height and radius of the base of a solid cylinder is 37 m. If the total surface area of the cylinder be find its volume.

 10

The ratio between the curved surface area and the total surface area of a right circular cylinder is 1:2. Find the volume of the cylinder if its total surface area is

12

The radii of two cylinders are in the ratio 2:3 and their heights are in the ratio 5:3. Calculate the ratio of their volumes and the ratio of their curved surfaces.

 13

A powder tin has a square base with side 12 cm and height 17.5 cm. another is cylindrical with diameter of its base 12 cm and height 17.5 cm. Which has more capacity and by how much?