Titanium undergoes an allotropic phase change from HCP to BCC upon heating above 882°C. Assume that.

Titanium
undergoes an allotropic phase change from HCP to BCC upon heating above 882°C.
Assume that in HCP Ti, a = 0.295 nm and c = 0.468 nm, while in BCC Ti, a =
0.332 nm. What is the fractional volume change when HCP Ti transforms to BCC
Ti?