Abrass cube, 10 cm on a side, is raised in temperature
by200c.
the coefficient of volume expansion ofbrass is
57x10-6/c.
by what percentage is anyone of the 10-cm edges increased
inlength?

Explanation:

Assuming that the thermal expansion of brass cube occurs isotropically (i.e. equal in all the directions).

Given:

Hence volume of the cube:

Now the volume of the cube after expansion:

Therefore,

Now the percentage change in the edges of the cube:

b.

explanation: