How are root. hair cells adapted for their functions

how do you calculate percentage change in mass

Root hair cells are adapted by having a large surface area so they can absorb more water and minerals and have lots of mitochondria which release glucose during respiration which provides energy for active transport
I might be wrong

    the box has volume x^2h.  the cylinder has volume x^2h/4.  v = πr^2h = x^2h/4  πr^2 = x^2/4  r^2 = x^2/(4π)  r = x/(2√π)  b