A brass measuring rule is connected 15°c the volume obtain is measured with the rule at 35°c appear to be 841.4cm. What is the length of the object? (Linear expansivity of brass=1.8×10-5 k-1)

Answer 1

new length= original length*(1+1.8e-5*20)
original length= 841.4/(1.00036)
=841.097205 change to significant digits given

Answer 2

I need the answer

Answer 3

A brass cube has a volume of 100cm3 at 25 degrees Celsius calculate it's volume at 0 degree Celsius linear expansivity of brass equals 2.0×10-5k-1