A sheet of brass 50 cm long and 8cm broad at `0^@C`. If the surface area at `100^@C` is `401.57cm^2`, find the coefficient of linear expansion of brass

The length of an iron rod at 100^@C is 300.36 cm and at 150^@C it is 300.54 cm. find the coefficient of linear expansion of its material and the length of rod at 0^@C .

Solve the following problems : A silver square sheet of length 10 cm is heated from temperature 20 ⁰C to 70 ⁰C . If the change in ita area is 0.18 cm^2 , then find the coefficient of areal expansion of silver .

Total surface area of a cube is 216 cm^2. Find its volume.

The length of a metal rod at 27^@ C is 4 cm. The length increases to 4.02 cm when the metal rod is heated upto 387^@ C . Determine the coefficient of linear expansion of the metal rod.

Find the surface area of sphere of radius 7 cm.

Answer the following : An aluminium sheet of area 0.1 m^2 , initially at temperature 30 ⁰C is heated such that it reaches the temperature of 70 ⁰C . If the coefficient of areal expansion of aluminium is 46.2 x 10^-6 (1/⁰C) , find the change in area of the sheet .

Find the surface area of a sphere of radius 3.5 cm.

A metal block of mass 10 kg is kept on a table. If the contact surface area is 100 cm^2 . Find the pressure on the table.

For a sphere, surface area is 154 sq.cm. Find its volume.